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RE: Moving to Qmail

by Michael Martinell :: Rate this Message:

> -----Original Message-----
> From: Kelvin Williams [mailto:kelvin-ml@...]
> Sent: Friday, June 24, 2005 7:57 PM
> To: qmail@...
> Subject: Moving to Qmail
>
> Does anyone have any advice on moving to a Qmail server from an existing
> server? In particular, the user's email on the existing server.
>
>
>
> We are planning to use Qmail for a client who is an ISP that has decided
> to bring their email operation in house (it has been outsourced). We have
> know all of the user's email addresses, unfortunately because their
> current provider encrypts the password we don't' have those. However, we
> are using vpopmail with the -enable-password-learning on.
>
>
>
> What I'd like to do, is make the change to the DNS server so they will
> begin hitting the new mailserver. However, immediately upon their first
> connection I'd like to fire off a process that connects to the existing
> server, and fetches all the email that is there. This will solve two
> problems: 1) user's will not miss any mail, and 2) will give us a 'grace
> period' for the DNS change to propogate.
>
>
>
> Is this a bad idea? Or does anyone have any better suggestions (or
> reading material).
>
>
>
> Thanks in advance.
>
> kw

This is how we just accomplished a similar move:
1. Set up qmail server with new virtual domain
2. Set up users email account on the mail server
3. Sent out emails to users informing them of the change, when it would be
and what their new settings would be. Also told them to make sure to do a
send/receive before they changed their settings.
4. Had ISP change the 10 level mx record to us
5. Had ISP change the 20 level mx record to them (just in case)
6. Used fetchmail to get mail to users new accounts (scripted process) After
the procedure was over in case there was any mail left at the ISP.
7. We didn't lose any mail

Hope this helps

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