Nabble - Courier Mail Server

Re: Duplicate files, single message

2009-12-08T10:18:37Z

On 2009-12-06 19:50, LuKreme wrote:
> I am occasionally seeing duplicated files in my courier-IMAP folders. Here's an example:
>
> $ ls -nls 1260094560.39840_0*
> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,
> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,S
> $ diff 1260094560.39840_0.mail.covisp.net\:2\, 1260094560.39840_0.mail.covisp.net\:2\,S
> $
>

I had exactly the same problem after restoring from a backup. At that
time I wrote a small script which fixed the issue. Perhaps it also helps
you:

http://git.georglutz.de/gitweb/?p=maildir_merge_duplicates.git;a=summary

Regards
Georg
--
Georg

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Re: Duplicate files, single message

2009-12-07T15:03:37Z

LuKreme writes:

> There is one little point, when the message is initially written, the
> filename ends with '.net' but once it's in cur it is renamed to '.net:2,'
> or 'net:2,S'. I suspect that at some point there is where the duplication
> occurs, particularly if Courier duplicates the message to ,S and is then
> supposed to remove the original?

Courier does not duplicate the message. The message is always renamed.

> Oh, wait a minute, I just remembered that procmail has a TRAP on some mailing lists that is supposed to 'mark' a message as read.
>
> TRAP='mv "$LASTFOLDER" "${LASTFOLDER}:2,S"'
>
> So that is something else. While it is a mv command and it shouldn't ever leave the original file behind, I suppose it is possible something there is mucking up on rare enough occasions that I see these left-over dupes?

By itself, no. However, you will need to analyze the exact interaction
between this bit of code, and everything else you use to access your
mailbox.

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Re: sasl and ldap authentication on postfix

2009-12-07T06:02:49Z

On Fri, Dec 4, 2009 at 10:49 PM, Sam Varshavchik <mrsam@...> wrote:
> If you want to implement SMTP authentication, and you're using Postfix, you
> should be asking this question on the Postfix mailing list.

Hello,

thanks for your reply, i've done my homework and it looks like what i
need is cyrus-sasl and cyrus-ldap which will connect to my ldap server
for auth over postfix/sasl/stmpd.

Cheers,
Steph

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From forum: courier-users

Re: Duplicate files, single message

2009-12-07T05:48:53Z

On 6-Dec-2009, at 17:19, Gordon Messmer wrote:
> If you're sure this didn't happen as a result of restoring from backup,
> you should locate the mail logs for that message's ID and see if there's
> any info there.

Ah, yeah, I should have checked that. However, it looks to me like any other message:

Dec 6 03:15:58 mail postfix/smtpd[39781]: 78155118ADBF: client=www.mythtv.org[140.211.167.131]
Dec 6 03:15:58 mail postfix/cleanup[39836]: 78155118ADBF: message-id=<1260094542.1902.16.camel@netbook>
Dec 6 03:15:58 mail postfix/qmgr[1145]: 78155118ADBF: from=<mythtv-users-bounces@...>, size=4668, nrcpt=2 (queue active)
Dec 6 03:15:59 mail postfix/smtp[39838]: 78155118ADBF: to=<*MIRROR*@...>, orig_to=<kremels@...>, relay=gmail-smtp-in.l.google.com[209.85.223.101]:25, delay=1.4, delays=0.74/0.05/0.19/0.41, dsn=2.0.0, status=sent (250 2.0.0 OK 1260094559 41si11521191iwn.12)
Dec 6 03:16:05 mail postfix/local[39837]: 78155118ADBF: to=<kremels@...>, orig_to=<kremels@...>, relay=local, delay=7.3, delays=0.74/0.07/0/6.5, dsn=2.0.0, status=sent (delivered to command: /usr/local/bin/procmail -t -a $EXTENSION)
Dec 6 03:16:05 mail postfix/qmgr[1145]: 78155118ADBF: removed

and the procmail log looks just like thousands of other mailing list deliveries:

From mythtv-users-bounces@... Sun Dec 6 03:15:58 2009
Subject: Re: vnc on headless backend
Folder: .mythtv.2009-12/new/1260094560.39840_0.mail.covisp.net 4780

(and yes, the forward to gmail is not unique, all my list mail gets forwarded to a gmail account)

There is one little point, when the message is initially written, the filename ends with '.net' but once it's in cur it is renamed to '.net:2,' or 'net:2,S'. I suspect that at some point there is where the duplication occurs, particularly if Courier duplicates the message to ,S and is then supposed to remove the original?

I can't imagine the MUA is relevant since it would not have direct access to the messages like that.

…

Oh, wait a minute, I just remembered that procmail has a TRAP on some mailing lists that is supposed to 'mark' a message as read.

TRAP='mv "$LASTFOLDER" "${LASTFOLDER}:2,S"'

So that is something else. While it is a mv command and it shouldn't ever leave the original file behind, I suppose it is possible something there is mucking up on rare enough occasions that I see these left-over dupes?

--
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From forum: courier-users

Re: Duplicate files, single message

2009-12-06T16:19:15Z

On 12/06/2009 10:50 AM, LuKreme wrote:
> I am occasionally seeing duplicated files in my courier-IMAP folders. Here's an example:
>
> $ ls -nls 1260094560.39840_0*
> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,
> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,S
>
...
> looking at the content of the file it is the exact same email, but looking at my MUA the message only exists once.
>

If you're sure this didn't happen as a result of restoring from backup,
you should locate the mail logs for that message's ID and see if there's
any info there.

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From forum: courier-users

Re: Duplicate files, single message

2009-12-06T15:47:32Z

On 6-Dec-2009, at 15:01, Sam Varshavchik wrote:
> For procmail, or anyone else, it is impossible to actually accomplish the task of delivering a message to a maildir unless the tmp and new subdirectories are actually touched. Scribbling something into their parent directory will have no effect.

Procmail knows how to deliver properly to maildirs by specifying .maildir/ what I was trying to make clear was that I was not putting the messages directly into ./maildir/new as some people have a bad habit of doing.

> Last time I checked, procmail really doesn't support maildirs. What its documentation claims to be maildir support merely involves writing each message to a unique file. This is insufficient, there's more to it than that. There is a well defined process by which new messages get delivered to a maildir.

Procmail does support maildir, and the messages are delivered by procmail. They show up in new (moved there after being written to tmp. This is not where the problem occurs). When they get moved from new to cur (once they've been seen by an MUA) is when the duplication occurs. It is not occurring on delivery.

>From man procmailrc:

If the mailbox name ends in "/", then this directory
is presumed to be a maildir folder; i.e., procmail will deliver the
message to a file in a subdirectory named "tmp" and rename it to be
inside a subdirectory named "new".

> The filenames you've shown appear to be formed by using the current timestamp and the delivering process's PID. Quite a while ago, it became apparent that modern servers that support modern of levels of mail traffic are quite capable of recycling the same process id during the same chronological second, as a result of rapid spawning of short-lived processes that typically occur when delivering mail. As such, the same filename may end up being generated for two discrete messages. The end results are unpredictable, message corruption is likely.

My server is several orders of magnitude less busy than that. It will take it days, probably, to recycle a PID.

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From forum: courier-users

Re: Duplicate files, single message

2009-12-06T14:01:24Z

LuKreme writes:

> On 6-Dec-2009, at 13:53, Sam Varshavchik wrote:
>
>> LuKreme writes:
>>
>>> I am occasionally seeing duplicated files in my courier-IMAP folders. Here's an example:
>>> $ ls -nls 1260094560.39840_0*
>>> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,
>>> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,S
>>> $ diff 1260094560.39840_0.mail.covisp.net\:2\, 1260094560.39840_0.mail.covisp.net\:2\,S $
>>> looking at the content of the file it is the exact same email, but looking at my MUA the message only exists once.
>>> Any ideas why this happens? Can I prevent it?
>>> (the reason I want to prevent it is that I am scanning the maildir for
>>> messages that are not marked as 'seen' with a terminal 'S'. I'm not
>>> doing anything that would 'hold those messages, just doing a ls −1dA
>>> $HOME/Maildir/.*/{cur,new}/*{net,','} 2>/dev/null | awk -F/ '{print $5}'
>>> to count any unread messages)
>>
>> What other scripts or software, instead of Courier-IMAP, do you use with your mailbox?
>
> Nothing that moves the messages other than my MUA. I use procmail, but it writes the messages to .mailinglist-2009-12/ and does not access new or cur folders.

For procmail, or anyone else, it is impossible to actually accomplish the
task of delivering a message to a maildir unless the tmp and new
subdirectories are actually touched. Scribbling something into their parent
directory will have no effect.

Last time I checked, procmail really doesn't support maildirs. What its
documentation claims to be maildir support merely involves writing each
message to a unique file. This is insufficient, there's more to it than
that. There is a well defined process by which new messages get delivered to
a maildir.

The filenames you've shown do not look like filenames that would be created
by Courier or maildrop when delivering messages. Courier-IMAP itself does
not deliver mail. An IMAP server provides access to existing mail in a
mailbox, it does not deliver any mail.

> the mailserver is running postfix.
>
> The issue does not come up very often, so I haven't been able to track it to any particular event, and it's invisible from the MUA side since the duplicate files only show once in client.

The filenames you've shown appear to be formed by using the current
timestamp and the delivering process's PID. Quite a while ago, it became
apparent that modern servers that support modern of levels of mail traffic
are quite capable of recycling the same process id during the same
chronological second, as a result of rapid spawning of short-lived processes
that typically occur when delivering mail. As such, the same filename may
end up being generated for two discrete messages. The end results are
unpredictable, message corruption is likely.

Whatever you're actually using to deliver mail, you should update it to
something more current, that uses additional factors in composing the
individual message filenames, removing the chance of potential filename
collision.

Another possibility is filesystem corruption, of course. Take this partition
offline and fsck, as a safety measure.

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Re: Duplicate files, single message

2009-12-06T13:11:20Z

On 6-Dec-2009, at 13:53, Sam Varshavchik wrote:

> LuKreme writes:
>
>> I am occasionally seeing duplicated files in my courier-IMAP folders. Here's an example:
>> $ ls -nls 1260094560.39840_0*
>> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,
>> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,S
>> $ diff 1260094560.39840_0.mail.covisp.net\:2\, 1260094560.39840_0.mail.covisp.net\:2\,S $
>> looking at the content of the file it is the exact same email, but looking at my MUA the message only exists once.
>> Any ideas why this happens? Can I prevent it?
>> (the reason I want to prevent it is that I am scanning the maildir for messages that are not marked as 'seen' with a terminal 'S'. I'm not doing anything that would 'hold those messages, just doing a ls −1dA $HOME/Maildir/.*/{cur,new}/*{net,','} 2>/dev/null | awk -F/ '{print $5}'
>> to count any unread messages)
>
> What other scripts or software, instead of Courier-IMAP, do you use with your mailbox?

Nothing that moves the messages other than my MUA. I use procmail, but it writes the messages to .mailinglist-2009-12/ and does not access new or cur folders.

the mailserver is running postfix.

The issue does not come up very often, so I haven't been able to track it to any particular event, and it's invisible from the MUA side since the duplicate files only show once in client.

--
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From forum: courier-users

Re: Duplicate files, single message

2009-12-06T12:53:23Z

LuKreme writes:

> I am occasionally seeing duplicated files in my courier-IMAP folders. Here's an example:
>
> $ ls -nls 1260094560.39840_0*
> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,
> 6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,S
> $ diff 1260094560.39840_0.mail.covisp.net\:2\, 1260094560.39840_0.mail.covisp.net\:2\,S
> $
>
> looking at the content of the file it is the exact same email, but looking at my MUA the message only exists once.
>
> Any ideas why this happens? Can I prevent it?
>
> (the reason I want to prevent it is that I am scanning the maildir for messages that are not marked as 'seen' with a terminal 'S'. I'm not doing anything that would 'hold those messages, just doing a
>
> ls −1dA $HOME/Maildir/.*/{cur,new}/*{net,','} 2>/dev/null | awk -F/ '{print $5}'
>
> to count any unread messages)

What other scripts or software, instead of Courier-IMAP, do you use with
your mailbox?

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From forum: courier-users

Duplicate files, single message

2009-12-06T10:50:56Z

I am occasionally seeing duplicated files in my courier-IMAP folders. Here's an example:

$ ls -nls 1260094560.39840_0*
6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,
6 -rw------- 2 1004 1005 4780 Dec 6 03:16 1260094560.39840_0.mail.covisp.net:2,S
$ diff 1260094560.39840_0.mail.covisp.net\:2\, 1260094560.39840_0.mail.covisp.net\:2\,S
$

looking at the content of the file it is the exact same email, but looking at my MUA the message only exists once.

Any ideas why this happens? Can I prevent it?

(the reason I want to prevent it is that I am scanning the maildir for messages that are not marked as 'seen' with a terminal 'S'. I'm not doing anything that would 'hold those messages, just doing a

ls −1dA $HOME/Maildir/.*/{cur,new}/*{net,','} 2>/dev/null | awk -F/ '{print $5}'

to count any unread messages)

--
You think you can catch Keyser Soze? You think a guy like that
comes this close to getting caught, and sticks his head out? If
he comes up for anything it'll be to get rid of me. After that
my guess is you'll never hear from him again.

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From forum: courier-users

Re: Maildrop posting processed files to spool file

2009-12-04T19:08:30Z

AJ Bourg writes:

> Hi Folks,
>
> Hoping you can help me figure this one out. I've got qmail + vpopmail
> setup using the basic setup from Bill Shupp's Qmail toaster and I'm using
> maildrop to help filter messages. (right now, I've been using it to drop
> messages that get too high of a spam assassin score for certain users)
>
> The problem is, maildrop seems to inexplicably write the messages it
> processes to /var/spool/mail/vpopmail. When this file grows to 2Gb,
> maildrop stops working. I do not see any good reason for maildrop to write
> messages to this file and would like it to stop. How?

maildrop doesn't do just whatever pops into its head. It does what it's told
to do, or it does what it's configured to do by default, in absence of
explicit instructions. If no explicit delivery instructions are provided,
maildrop attempts to deliver mail to the recipient's default mailbox.
maildrop determines the location of the default mailbox based on what it was
told to do before, during, and after running the configure script.

Without having any more information about how you exactly configured
maildrop, you're probably having all mail delivered by invoking maildrop as
the 'vpopmail' user. maildrop does not know anything about vpopmail or
qmail. It's not a vpopmail or a qmail-specific tool. If no explicit mail
delivery instructions are provided, since maildrop sees that it's running as
userid called "vpopmail", it therefore figures that this particular
account's default mailbox is /var/spool/mail/vpopmail. This is because the
configuration script determined that on your machine, each account's default
system mailbox is /var/spool/mail/<loginid>. This is probably what's
happening in your case, but you really haven't provided sufficient
information, such as the log of you running your configure script, to make a
definitive conclusion.

> And the mailfilter-mailing list file, which I designed to limit spam from
> passing on to mailinglists by exiting with error code 99 to drop the email
> completely:
>
> # Set the default shell.
> SHELL="/bin/sh"
>
> # Match this line X-Spam-Level: **
> # Prevents spam from being delivered with a score greater than 2.
> if (/^(X-Spam-Level:\s\*\*)/:h)
> {
>     exception {
>         EXITCODE=99
>        exit
>     }
> }

Right, your only mail delivery instructions are to terminate with exit code
set to 99, if this header is present. Otherwise, you are not providing any
mail delivery instructions, so maildrop takes the default mail delivery
path: delivery to the default account mailbox. Mystery solved.

> I tried adding to /dev/null to the end of the file to prevent maildrop

If you really added, literally:

/dev/null

to the end of your maildrop recipe file, then this would be a syntax error,
and maildrop wouldn't do anything at all. So, this is not what you really
did.

All you really need to do, as best as I can figure out, is put a simple
"exit", explicitly telling maildrop to stop delivering the message.

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Re: sasl and ldap authentication on postfix

2009-12-04T14:49:17Z

FRLinux writes:

> Hello,
>
> I have implemented serveral setups with postfix and courier. My latest
> talks directly with OpenLDAP for user authentication, mail delivery
> and mailboxes. Everything has been working great of years now. I would
> however like to implement SMTPD authentication with SASL and TLS. I am
> also fairly familiar with this process with setups such as normal user
> password files and courier. I have failed to find some detailed
> documentation with sasl + courier + openldap.
>
> So has someone implemented something like that and if so, could I be
> pointed in the right direction?

If you want to implement SMTP authentication, and you're using Postfix, you
should be asking this question on the Postfix mailing list.

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Maildrop posting processed files to spool file

2009-12-04T14:46:00Z

Hi Folks,

Hoping you can help me figure this one out. I've got qmail + vpopmail setup using the basic setup from Bill Shupp's Qmail toaster and I'm using maildrop to help filter messages. (right now, I've been using it to drop messages that get too high of a spam assassin score for certain users)

The problem is, maildrop seems to inexplicably write the messages it processes to /var/spool/mail/vpopmail. When this file grows to 2Gb, maildrop stops working. I do not see any good reason for maildrop to write messages to this file and would like it to stop. How?

For reference, one of the .qmail files: (which is just a test mailing list)

| /usr/local/bin/maildrop /home/vpopmail/domains/bellaenergy.com/mailfilter-mailinglist
&aj.bourg@...

And the mailfilter-mailing list file, which I designed to limit spam from passing on to mailinglists by exiting with error code 99 to drop the email completely:

# Set the default shell.
SHELL="/bin/sh"

# Match this line X-Spam-Level: **
# Prevents spam from being delivered with a score greater than 2.
if (/^(X-Spam-Level:\s\*\*)/:h)
{
    exception {
        EXITCODE=99
       exit
    }
}

I tried adding to /dev/null to the end of the file to prevent maildrop from routing the messages at all, but it still wrote the message to the spool file. It is definitely maildrop related because when I remove maildrop from the .qmail file, no messages are written.

At some point, I may just put a cronjob to blank out the spoolfile to keep it from growing to 2Gb, but prevention seems better. :)

AJ

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From forum: courier-maildrop

sasl and ldap authentication on postfix

2009-12-04T06:55:48Z

Hello,

I have implemented serveral setups with postfix and courier. My latest
talks directly with OpenLDAP for user authentication, mail delivery
and mailboxes. Everything has been working great of years now. I would
however like to implement SMTPD authentication with SASL and TLS. I am
also fairly familiar with this process with setups such as normal user
password files and courier. I have failed to find some detailed
documentation with sasl + courier + openldap.

So has someone implemented something like that and if so, could I be
pointed in the right direction?

Cheers,
Steph

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From forum: courier-users

Re: IMAP folders issues - cannot save drafts and sent messages

2009-12-04T06:48:54Z

Sergiu Voicu wrote:

> Hello all
>
> I am newbee with Courier and need your assistance on an issue that I'm
> having with IMAP
>
> The machine is a FreeBSD running Postfix and Courier with MySQL support.
>
> Using an IMAP client like Thunderbird, I am unable to save drafts/sent
> messages into corresponding folders.
>
> The Maildir folder structure is like this:
> /..../vmail/domain.tld/account.name/Maildir
>
> When creating a new account, I run "maildirmake
> ../account.name/Maildir". The Maildir contents are the usual cur, new
> and tmp
>
> I have also manually created folders Sent, Draft and Sent (using
> maildirmake -f ...) in ../account.name/Maildir but with no success.
>
> The only thing working was the Trash folder, that was also created under
> ../Maildir/, but only with Thunderbird. With a webmail client
> (Roundcube) I wasn't able to delete a message (move it to Trash).
>
> Can you please advice on this?
>

Sounds like a permissions problem to me. Do you have permissions to
write to the folders you created?

Show us the output of this:

$ cd /..../vmail/domain.tld/account.name
$ find Maildir -type d -exec ls -ld {} \;

(Substitute the real path to the account's vmail directory, of course)

--
Bowie

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From forum: courier-users

IMAP folders issues - cannot save drafts and sent messages

2009-12-04T03:30:41Z

Hello all

I am newbee with Courier and need your assistance on an issue that I'm
having with IMAP

The machine is a FreeBSD running Postfix and Courier with MySQL support.

Using an IMAP client like Thunderbird, I am unable to save drafts/sent
messages into corresponding folders.

The Maildir folder structure is like this:
/..../vmail/domain.tld/account.name/Maildir

When creating a new account, I run "maildirmake
../account.name/Maildir". The Maildir contents are the usual cur, new
and tmp

I have also manually created folders Sent, Draft and Sent (using
maildirmake -f ...) in ../account.name/Maildir but with no success.

The only thing working was the Trash folder, that was also created under
../Maildir/, but only with Thunderbird. With a webmail client
(Roundcube) I wasn't able to delete a message (move it to Trash).

Can you please advice on this?

Thank you
Sergiu V.

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From forum: courier-users

Re: DKIM headers

2009-12-03T16:26:52Z

I forgot the domain check...
Will add it tomorrow... Time to sleep.

Jerome.

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From forum: courier-users

DKIM headers

2009-12-03T15:47:55Z

Hello,

I used few months ago a perlfilter to implement DKIM on a courier
server. But I had some crashes with it.
So... I rewrote it :-) for pythonfilter...

How to install it:
- you need to install pydkim (beware of dependencies with net.resolver
provided by python-adns)
- generate your keys (for this, you can use
http://www.topdog-software.com/files/dkim-genkey.sh ). Beware of the
owner / rights of files generated
- modify your DNS...
- In /etc/pythonfilter.conf, add following lines AFTER antispam filters:

# dkim: sign message using DKIM signature
#
dkim_sign

- In /etc/pythonfilter-modules.conf, add following lines:

[dkim_sign.py]
selector = 'dkim'
privkey = '/home/dkim/dkim.private'

- Install the script attached. It's a little bit ugly (pydkim can't
handle Messages objects, so I open the body file as a "simple" string...)

Several things I have in mind:
- one private key per domain. So, we could enable DKIM only for domains
we want instead of allowing it for every domain we "host". Privkey would
become privkeydir, dkim.private would become domain.private for each
domain... Is this a real need?
- do I need to explicitly close files I opened ? (bodyFile and privkey)
or python will do it for me?
- This filter supposes sender is not forged... So it has to be run
after antispam filters... Or it would be possible to sign spams... Is
this way safe enough?

I wrote the filter tonight... I didn't test it yet ! Feel free to
comment it, to fix it, to use it :-)

Hope this helps.
Jerome Blion.

#!/usr/bin/python
# dkim_sign -- Courier filter which add DKIM signature to mails sent
# Copyright (C) 2009 Jerome Blion <jerome@...>
#
# This file is part of pythonfilter.
#
# pythonfilter is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# pythonfilter is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with pythonfilter. If not, see <http://www.gnu.org/licenses/>.

import email
import sys
import courier.config
import courier.control
import courier.xfilter
import dkim

def initFilter():
courier.config.applyModuleConfig('dkim_sign.py', globals())
# Record in the system log that this filter was initialized.
sys.stderr.write('Initialized the "dkim" python filter\n')

def doFilter(bodyFile, controlFileList):
"""Sign mails with DKIM keys

For mails which are locally hosted, sign messages with DKIM

"""

try:
message = open(bodyFile).read()
sender = courier.control.getSender(controlFileList)
domain=sender.split('@')[1]

sig = dkim.sign(message, selector, domain, open(privkey, "r").read())
final_mail = email.message_from_string(sig+message)

try:
mfilter = courier.xfilter.XFilter('dkim_sign', bodyFile, controlFileList)
except courier.xfilter.LoopError, e:
# LoopError indicates that we've already filtered this message.
return ''

mfilter.setMessage(final_mail)
submitVal = mfilter.submit()
return submitVal

except Exception, e:
return '451 Internal failure : %s' (e)

if __name__ == '__main__':
# For debugging, you can create a file or set of files that
# mimics the Courier control file set.
if not sys.argv[2:]:
print 'Use: dkim.py <message body file> <control file list>'
sys.exit(1)
initFilter()
print doFilter(sys.argv[1], sys.argv[2])

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From forum: courier-users

Re: TLS/SSL Client Renegotiation Attacks

2009-12-03T15:02:50Z

Brian A. Seklecki writes:

> All:
>
> A lot of projects(1) are analyzing how their specific protocol may
> be specifically vulnerable due to the recently release TLS/SSL
> protocol-level vulnerability(2) involving client re-negotiations.
>
> With couriertcpd(8), does the SSL wrapper present the same
> limitation for cleartext protocols like SMTP and IMAP?
>
> Does the client or server SMTP code utilize renegotiations? I
> would think not.

No. There is no support for renegotiation in the client or the server. The
client never requests a renegotiation. The server ignores renegotiation
requests, and never does a handshake after the connection is established.
Not actually quite sure what happens if the server gets a renegotation
request and ignores it. Either the session continues as is, or it breaks
with an error.

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From forum: courier-users

TLS/SSL Client Renegotiation Attacks

2009-12-03T09:43:19Z

All:

A lot of projects(1) are analyzing how their specific protocol may
be specifically vulnerable due to the recently release TLS/SSL
protocol-level vulnerability(2) involving client re-negotiations.

With couriertcpd(8), does the SSL wrapper present the same
limitation for cleartext protocols like SMTP and IMAP?

Does the client or server SMTP code utilize renegotiations? I
would think not.

My understanding would be that, with SSL certificate exchange, other
than validating the identity of a client/server connection against
global PKI (Trusted CAs for signed mail server certificates), at
no point during a single SMTP or IMAP transaction would a new
certificate be presented for additional security credentials.

Of course, that doesn't mean the session cannot be hijacked for
data injection (Bypassing a relay restriction in ESTMPD, for
example)

SQWebmail sessions could be taken over, as well, I suppose.

FreeBSD has disabled renegotiation support at the library-level for the
in-tree OpenSSL. Apache has disabled renegotiation in the daemon code.

I'm curious what our approach will be.

1. OpenLDAP:
http://www.openldap.org/lists/ietf-ldapext/200911/msg00000.html
2. http://extendedsubset.com/?p=8

Thanks, ~BAS

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From forum: courier-users

Re: POP3 authentication problem in courier

2009-11-27T04:10:38Z

Fizeen writes:

> INFO: Installing libauthldap
> INFO: Installation complete: authldap
>
> INFO: Installing libauthcustom
> INFO: Installation complete: authcustom
> INFO: Installing libauthpipe
> INFO: Installation complete: authpipe
> ERR: ldap_simple_bind_s failed: Can't contact LDAP server
> ERR: ldap_simple_bind_s failed: Can't contact LDAP server
>
> ERR: ldap_simple_bind_s failed: Can't contact LDAP server
> ERR: ldap_simple_bind_s failed: Can't contact LDAP server
>
> I found that whenever i give the username and password for pop3 in the
> windows command prompt "ERR: ldap_simple_bind_s failed: Can't contact LDAP
> server" pops up.But i didnt use ldap authentication for imap same suits

Yes, you did. You installed authldap. If you installed the LDAP module, then
you'll need to configure it fully. If you do not need LDAP authentication,
you need to remove that module.

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From forum: courier-imap

POP3 authentication problem in courier

2009-11-26T21:49:04Z

Hi,

I googled and found some solutions .I configured courier imap with postfix mailserver.Now i am able to configure mail account settings in my outlook express for imap .But if i configure for pop3 it gives me " Your password was rejected .Temporary problem please try again later".
I am using the same authentication settings for pop3 as imap.Both are using authuserdb(which means /etc/password,think i am not wrong).While in windows command prompt i checked whether i am able to communicate with the user in the mail server and these are my outputs.

cmd>telnet 172.24.1.120 110

+OK Hello there
user xyz
+OK Password required
pass ****
-ERR Temporary problem ,please try again later

Connection to host lost.

cmd>telnet 172.24.1.120 143
*OK...............
..........................
a login xyz ****
a OK LOGIN Ok.

My authdaemonrc file contains
..................................
authmodulelist="authuserdb authpam authldap authcustom authpipe"
......................................

I created a log with monitoring the authdaemond it shows the following

INFO: modules="authuserdb authpam authldap authcustom authpipe", daemons=5

INFO: Installing libauthuserdb
INFO: Installation complete: authuserdb
INFO: Installing libauthpam
INFO: Installation complete: authpam
INFO: Installing libauthldap
INFO: Installation complete: authldap

INFO: Installing libauthcustom
INFO: Installation complete: authcustom
INFO: Installing libauthpipe
INFO: Installation complete: authpipe
ERR: ldap_simple_bind_s failed: Can't contact LDAP server
ERR: ldap_simple_bind_s failed: Can't contact LDAP server

ERR: ldap_simple_bind_s failed: Can't contact LDAP server
ERR: ldap_simple_bind_s failed: Can't contact LDAP server

I found that whenever i give the username and password for pop3 in the windows command prompt "ERR: ldap_simple_bind_s failed: Can't contact LDAP server" pops up.But i didnt use ldap authentication for imap same suits for my pop3 .Please let me know whether there is any pop3file i need to specify for local authentication setting other than authdaemonrc file

Please let me know where i am wrong since i am facing this problem only for pop3 protocol and not for imap.

--

Cheers
Fizeen

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From forum: courier-imap

deletion of folder not allowed

2009-11-26T16:17:09Z

How can I compile courier-imap that it won't allow users to delete certain folders? I remember before that I edit
maildirdelfolder.c but I don't see the portion I need to edit or add anymore.

Anyone who can help me how to do this?

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From forum: courier-imap

Re: More files in $HOME/Maildir/.Sent than what I see in SqWebMail sent folder

2009-11-26T07:13:31Z

Forgotten one thing:

if you move the files into /new/ with the file extension ":2,S" then it
will be automaticaly maked as read. Using no extension, let them show
up as new.

Thanks, Greetings and nice Day/Evening
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant

--
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##################### Debian GNU/Linux Consultant #####################
<http://www.tamay-dogan.net/> Michelle Konzack
<http://www.can4linux.org/> Apt. 917
<http://www.flexray4linux.org/> 50, rue de Soultz
Jabber linux4michelle@... 67100 Strabourg/France
IRC #Debian (irc.icq.com) Tel. DE: +49 177 9351947
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From forum: courier-users

Re: More files in $HOME/Maildir/.Sent than what I see in SqWebMail sent folder

2009-11-26T07:11:36Z

Am 2009-11-26 12:59:00, schrieb Thomas Seilund:
> Michelle Konzack wrote:
> > You have to copy the files into /new/ and the next time you use an
> > imap/Webmail client, courier-imap move the files from itself into /cur/
> > and register the files in /courierimapuiddb correctly to show up.
> Hi Michelle
>
> Thanks a lot.
>
> Worked just like you said!

Perfectly...

I do very much mail treatment in procmail and from external scripts and
have now some experience with because I am using courier since long time

Thanks, Greetings and nice Day/Evening
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant

--
Linux-User #280138 with the Linux Counter, http://counter.li.org/
##################### Debian GNU/Linux Consultant #####################
<http://www.tamay-dogan.net/> Michelle Konzack
<http://www.can4linux.org/> Apt. 917
<http://www.flexray4linux.org/> 50, rue de Soultz
Jabber linux4michelle@... 67100 Strabourg/France
IRC #Debian (irc.icq.com) Tel. DE: +49 177 9351947
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From forum: courier-users

Re: More files in $HOME/Maildir/.Sent than what I see in SqWebMail sent folder

2009-11-26T03:59:00Z

Michelle Konzack wrote:

> Hello Thomas,
>
> Am 2009-11-26 08:32:56, schrieb Thomas Seilund:
>
>> Dear All
>>
>> I have 195 files in $HOME/.Sent/cur and I see that I have 195 messages
>> in the Sent folder when looking at the folder overview screen in SqWebMail.
>>
>> But when I open the Sent folder in SqWebMail I only see 2 mails.
>>
>> I copied mail files from a backup into the users $HOME/.Sent/cur and it
>> seems that these files do not show up in the sent folder in SqWebMail.
>>
>> Any hints?
>>
>
> You have to copy the files into /new/ and the next time you use an
> imap/Webmail client, courier-imap move the files from itself into /cur/
> and register the files in /courierimapuiddb correctly to show up.
>
> Thanks, Greetings and nice Day/Evening
> Michelle Konzack
> Systemadministrator
> Tamay Dogan Network
> Debian GNU/Linux Consultant
>
>
> ------------------------------------------------------------------------
>
> ------------------------------------------------------------------------------
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> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
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> _______________________________________________
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> Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
>

Hi Michelle

Thanks a lot.

Worked just like you said!

Thomas S

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From forum: courier-users

Re: More files in $HOME/Maildir/.Sent than what I see in SqWebMail sent folder

2009-11-26T03:21:47Z

Bijan Soleymani wrote:

> Hey Thomas,
>
> Are they proper maildir mail messages? Generally I think you're supposed
> to have software handle delivering messages into Maildirs. Just copying
> random files into the cur directory might not work. They have to follow
> the Maildir naming conventions, etc.
>
> This is probably not the problem (if you copied messages from another
> Maildir into there, then it should probably work most of the time), but
> it's the most obvious thing to check.
>
> Bijan
>
> Thomas Seilund wrote:
>
>> Dear All
>>
>> I have 195 files in $HOME/.Sent/cur and I see that I have 195 messages
>> in the Sent folder when looking at the folder overview screen in SqWebMail.
>>
>> But when I open the Sent folder in SqWebMail I only see 2 mails.
>>
>> I copied mail files from a backup into the users $HOME/.Sent/cur and it
>> seems that these files do not show up in the sent folder in SqWebMail.
>>
>> Any hints?
>>
>> Thanks a lot
>>
>>
>> ------------------------------------------------------------------------------
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>> trial. Simplify your report design, integration and deployment - and focus on
>> what you do best, core application coding. Discover what's new with
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>> _______________________________________________
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>> courier-users@...
>> Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
>>
>>
>
>
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> Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
>

Hi Bijan

Thanks for the answer.

I checked the files in $HOME/Maildir/.Sent/cur and saw that the files I
had copied in did not have the right owner.

I corrected the owner and expected everything to be ok but still I don't
see the mail in SqWebMail send folder.

And yes, I believe the files are correct maildir files. Files were
copied ind from a previous version of Courier maildir structure.

Below you see three files - I got the list (list is reduced below) by
grepping for Subject: in $HOME/Maildir/.Sent/cur.

The last two mails show up in SqWebMail but the first one does not!

1255888577.M226367P19980V0000000000000303I001239CE.p600.netmaster.dk,S=2609:2,S:Subject:
Re: SV: Berlin- info
1257787930.M396878P2535V0000000000000803I0008C515.p600.netmaster.dk,S=5534:2,S:Subject:
Lejlighed i Berlin (fwd)
1258137299.M872148P13023V0000000000000803I00007FC1.p600.netmaster.dk,S=137094:2,S:Subject:
keramik udstilling (fwd)

Thanks

Thomas S

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From forum: courier-users

Re: More files in $HOME/Maildir/.Sent than what I see in SqWebMail sent folder

2009-11-26T02:47:24Z

Hello Thomas,

Am 2009-11-26 08:32:56, schrieb Thomas Seilund:

You have to copy the files into /new/ and the next time you use an
imap/Webmail client, courier-imap move the files from itself into /cur/
and register the files in /courierimapuiddb correctly to show up.

Thanks, Greetings and nice Day/Evening
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant

--
Linux-User #280138 with the Linux Counter, http://counter.li.org/
##################### Debian GNU/Linux Consultant #####################
<http://www.tamay-dogan.net/> Michelle Konzack
<http://www.can4linux.org/> Apt. 917
<http://www.flexray4linux.org/> 50, rue de Soultz
Jabber linux4michelle@... 67100 Strabourg/France
IRC #Debian (irc.icq.com) Tel. DE: +49 177 9351947
ICQ #328449886 Tel. FR: +33 6 61925193

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From forum: courier-users

Re: More files in $HOME/Maildir/.Sent than what I see in SqWebMail sent folder

2009-11-26T00:47:34Z

Hey Thomas,

Are they proper maildir mail messages? Generally I think you're supposed
to have software handle delivering messages into Maildirs. Just copying
random files into the cur directory might not work. They have to follow
the Maildir naming conventions, etc.

This is probably not the problem (if you copied messages from another
Maildir into there, then it should probably work most of the time), but
it's the most obvious thing to check.

Bijan

Thomas Seilund wrote:

> Dear All
>
> I have 195 files in $HOME/.Sent/cur and I see that I have 195 messages
> in the Sent folder when looking at the folder overview screen in SqWebMail.
>
> But when I open the Sent folder in SqWebMail I only see 2 mails.
>
> I copied mail files from a backup into the users $HOME/.Sent/cur and it
> seems that these files do not show up in the sent folder in SqWebMail.
>
> Any hints?
>
> Thanks a lot
>
>
> ------------------------------------------------------------------------------
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> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now. http://p.sf.net/sfu/bobj-july
> _______________________________________________
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> courier-users@...
> Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
>

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From forum: courier-users

More files in $HOME/Maildir/.Sent than what I see in SqWebMail sent folder

2009-11-25T23:32:56Z

Dear All

I have 195 files in $HOME/.Sent/cur and I see that I have 195 messages
in the Sent folder when looking at the folder overview screen in SqWebMail.

But when I open the Sent folder in SqWebMail I only see 2 mails.

I copied mail files from a backup into the users $HOME/.Sent/cur and it
seems that these files do not show up in the sent folder in SqWebMail.

Any hints?

Thanks a lot

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From forum: courier-users

Re: who should own maildroprc file?

2009-11-24T17:04:25Z

Cliff Nieuwenhuis writes:

> On Tue, 24 Nov 2009 18:07:09 -0500
> Sam Varshavchik <mrsam@...> wrote:
>
>> Cliff Nieuwenhuis writes:
>> > [snip]
>> > Changing permissions results in the "Cannot have world/group
>> > permissions on the filter file - for your own good." error, so I
>> > thought I'd change the owner of the filter file. But to who?
>>
>> To whatever userid Postfix invokes maildrop as.
>
> Thanks for the quick reply Sam. I'm not sure how to find that userid.

I have no Postfix-specific knowledge to share. You can try the Postfix
mailing list; or set up a test script that creates a dummy file in /tmp, by
whose ownership you can deduce the userid and the groupid of the
Postfix-invoked process.

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From forum: courier-maildrop

Re: who should own maildroprc file?

2009-11-24T16:30:54Z

On Tue, 24 Nov 2009 18:07:09 -0500
Sam Varshavchik <mrsam@...> wrote:

> Cliff Nieuwenhuis writes:
> > [snip]
> > Changing permissions results in the "Cannot have world/group
> > permissions on the filter file - for your own good." error, so I
> > thought I'd change the owner of the filter file. But to who?
>
> To whatever userid Postfix invokes maildrop as.

Thanks for the quick reply Sam. I'm not sure how to find that userid.

--
Cliff

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From forum: courier-maildrop

Re: who should own maildroprc file?

2009-11-24T15:07:09Z

Cliff Nieuwenhuis writes:

>
> Then I added a line to my aliases file like this:
>
> special: |"maildrop /usr/local/share/maildirs/myfilter"
>
> My thought was that mail for 'special' will be sent to maildrop in
> "Manual mode", and 'myfilter' will deliver the message to one of the
> shared maildir's subfolders; and indeed it appears to try.
> However, I get the message "/usr/bin/maildrop: Unable to open filter
> file, errno=13."
>
> Changing permissions results in the "Cannot have world/group
> permissions on the filter file - for your own good." error, so I
> thought I'd change the owner of the filter file. But to who?

To whatever userid Postfix invokes maildrop as.

> I tried 'postfix' because in main.cf I have "mail_owner = postfix", but
> that didn't work, and I tried 'nobody' because in master.cf I have:
>
> maildrop unix - n n - - pipe
> flags=DRhu user=nobody argv=/usr/bin/maildrop -d ${recipient}
>
> ...but that didn't work either.

Probably because this has nothing to do with aliases, but with delivery to
individual accounts.

> So Postfix will accept mail addressed to 'special', but I can't figure
> out who should own the '/usr/local/share/maildirs/myfilter' file in my
> example, since the manuals don't make it clear to me what happens when
> maildrop is invoked as a command destination in an aliases lookup.

That's because maildrop is not a Postfix-specific tool. maildrop does not
know what "invoked as a command destination in an aliases lookup" means.
Maildrop gets invoked by some opaque parent process, and runs using some
userid and groupid. That's all that maildrop knows. A -d option may or may
not be present. The combination of the two defines the recipient's identity.

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From forum: courier-maildrop

Re: authlib build with postgres on Gentoo/64

2009-11-24T15:03:04Z

Matus UHLAR - fantomas writes:

> Hello,
>
> building courier-authlib 0.62.2 and 0.62.4 with postgres (libpq-8.1.11)
> support on Gentoo GNU/linux on amd64 architecture fails with following
> message:
>
> * QA Notice: Package has poor programming practices which may compile
> * fine but exhibit random runtime failures.
> * authpgsqllib.c:124: warning: implicit declaration of function ‘pg_encoding_to_char’
>
> *
> * QA Notice: Package has poor programming practices which may compile
> * but will almost certainly crash on 64bit architectures.
> *
> * Function `pg_encoding_to_char' implicitly converted to pointer at authpgsqllib.c:124
> *
> * Please file a bug about this at http://bugs.gentoo.org/
> * with the maintaining herd of the package.
> *
> *
> * ERROR: net-libs/courier-authlib-0.62.4 failed.
> * Call stack:
> * misc-functions.sh, line 729: Called install_qa_check
> * misc-functions.sh, line 421: Called die
> * The specific snippet of code:
>
> The function ‘pg_encoding_to_char’ is mentioned in authpgsqllib.c file on
> line 124:
>
> check = pg_encoding_to_char(PQclientEncoding(pgconn));
>
> The pg_encoding_to_char seems to be included in libpq-fe.h in libpq-8.3, but
> version 8.1 (latest stable on gentoo) needs another file(s) to include.

Some Googling suggests that it might be defined in pg_wchar.h

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From forum: courier-users

who should own maildroprc file?

2009-11-24T10:00:10Z

I've read through the manuals and understand that maildrop will not
read instructions from a .mailfilter file unless that file is owned by
the user and has read/write (only) permissions on that file.

If I understand the process correctly the the "user" is the user
account on the system for whom the mail is intended. (I am using local
delivery -- I don't have virtual hosts) So, if my aliases file
contains a line like this:

sales: cliff

Then mail addressed for sales gets delivered to cliff, and maildrop
will process cliff's .mailfilter as cliff. Maildrop is invoked
because I've configured Postfix with this line in main.cf:

mailbox_command = /usr/bin/maildrop -d ${USER}

Up to this point everything is working fine.

Next I tried something a little different. I want to accept mail for
some special addresses and have postfix deliver them to a shared
Maildir. So I used maildirmake -S ... , maildirmake -s write -f ... ,
and maildirmake --add as per the manual to make my shared maildir
folder.

Then I added a line to my aliases file like this:

special: |"maildrop /usr/local/share/maildirs/myfilter"

My thought was that mail for 'special' will be sent to maildrop in
"Manual mode", and 'myfilter' will deliver the message to one of the
shared maildir's subfolders; and indeed it appears to try.
However, I get the message "/usr/bin/maildrop: Unable to open filter
file, errno=13."

Changing permissions results in the "Cannot have world/group
permissions on the filter file - for your own good." error, so I
thought I'd change the owner of the filter file. But to who?

I tried 'postfix' because in main.cf I have "mail_owner = postfix", but
that didn't work, and I tried 'nobody' because in master.cf I have:

maildrop unix - n n - - pipe
flags=DRhu user=nobody argv=/usr/bin/maildrop -d ${recipient}

...but that didn't work either.

So Postfix will accept mail addressed to 'special', but I can't figure
out who should own the '/usr/local/share/maildirs/myfilter' file in my
example, since the manuals don't make it clear to me what happens when
maildrop is invoked as a command destination in an aliases lookup.

Perhaps there is a better way to combine mail sent to any of
several non-system-user e-mail addresses into one shared maildir
directory?

--
Cliff Nieuwenhuis

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From forum: courier-maildrop