Looking for advise regarding MTA/IMAP/POP server

[Michael Naef]

On Friday 15 February 2008, Leander wrote:
> Hi Scott,
> I do not have any experience with SurgeMail.
> Recently I used imapsync
> (http://www.freshports.org/mail/imapsync/) to migrate about
> 250 mailboxes from courier imap to dovecot. I wrote a little
> perl skript to fetch the login credentials from MySQL and then
> sync each mailbox.
> Can´t say much about performance or scalability, but I have
> read of people migrating/syncing about 20k+ mailboxes with it.

We used dovecots PostLoginScripting with 
courier-dovecot-migrate.pl to convert the Mailboxes at the first 
login time. See http://wiki.dovecot.org/Migration/Courier. 
170'000 mailboxes were migrated from courrier to dovecot this 
way.

For other Systems have a look at 
http://wiki.dovecot.org/Migration

Have fun,

Michael