greylisting

David Woodhouse <dwmw2@...> wrote:
> On Sat, 2009-06-06 at 17:19 +0100, Terry wrote:
[...]
>> ( using postgrey by the way ) .

> Ah, that explains it. Postgrey is one of the worst implementations of
> greylisting I've ever encountered.

Hello David,

Could you please tell me what's so bad about postgrey? I am also using it
using and I just do not get where it fails. (For reference I do know
why postgrey is smarter than greylistd. greylistd has no
--auto-whitelist-clients.)

>  Why aren't you just using Exim's native capabilities?

At the time I was implementing greylisting the hand-built exim-acl
stuff either used flat files ($run /binecho >>) or was requiring
postgres or mysql. At that time these slolutions also were less smart
than postgrey.

> I'd suggest reading http://wiki.exim.org/SimpleGreylisting
[...]

Situation seems to have changed, though.

thanks, cu andreas

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Andreas Metzler <eximusers@...> wrote:
> David Woodhouse <dwmw2@...> wrote:
[...]
>> I'd suggest reading http://wiki.exim.org/SimpleGreylisting
> [...]

> Situation seems to have changed, though.

Major thing I do not like about this: It runs after DATA. For me a
major point of greylisting is to be cheap. i.e. mails not transfered
twice, spamassassin not run twice, etc.
cu andreas
--
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so grateful to you.'
`I sew his ears on from time to time, sure'


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[Dmitry Samersoff]

Andreas Metzler wrote:
> Andreas Metzler <eximusers@...> wrote:
>> David Woodhouse <dwmw2@...> wrote:
> [...]
>>> I'd suggest reading http://wiki.exim.org/SimpleGreylisting
>> [...]
>
>> Situation seems to have changed, though.
>
> Major thing I do not like about this: It runs after DATA.

+1 - one of main goal of my implementation was reject messages as early
as possible.

But unfortunately we have very limited set of information about a
message at HELO time so I'm thinking about two stages greylisting.

-Dmitry

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Dmitry Samersoff
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