Postfix Mail Server Migration

Charles Curley charlescurley at
Fri May 9 18:04:08 MDT 2008

On Fri, May 09, 2008 at 05:05:32PM -0600, Dallin Jones wrote:
> I am looking at migrating my Postfix Mail server from one machine to
> another. I have it all set up and working and I am ready to flip the
> switch. One thing that I have noticed in my testing is that once I
> change the IP address to the new address, the mail client doesn't
> fetch any mail from the new server unless I delete the account and
> create it again.

I gather you're using hard coded IP addreses. Silly boy, even I know
better than that. :-) I'd look at using an MX record in your DNS
setup. As others have noted, it can take a while for it to propagate,
and on some clients the change may require a reboot.

> Also, since the server is setup with IMAP, to copy all the messages
> from machine A to machine B, should I use rsync, or is there something
> else that should be used?

Be sure to shut both instances of Postfix off while you do so.


Charles Curley                  /"\    ASCII Ribbon Campaign
Looking for fine software       \ /    Respect for open standards
and/or writing?                  X     No HTML/RTF in email    / \    No M$ Word docs in email

Key fingerprint = CE5C 6645 A45A 64E4 94C0  809C FFF6 4C48 4ECD DFDB
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
Url : 

More information about the PLUG mailing list