Courier to dovecot migration
Par jd le vendredi, octobre 2 2009, 17:03 - Free Software - Lien permanent
This week, I've managed to migrate from courier-imap to dovecot at work. I always had a good experience with dovecot, and I still have one.
Dovecot performances are very good in comparison with courier. With that switch, we dropped the CPU usage of the server from 25 % to 10 %, and it's damn faster now. I have no idea why, but I think that it's better written looking at the code, and also that its usage of index files helps a lot.
We got no problem getting things work with public folders either, so the switch was almost painless.
The only problem we had is that Dovecot is too smart for some MUA. Consequently, we hit an 8 years old Mutt bug #969, which I also reported to the Debian BTS as #549204 with a not-well-tested-but-seems-to-work patch.
Thanks to Claws mail, we also found a bug in dovecot 1.2.5, which should be fixed soon. Dovecot upstream is very responsive and that's always something nice to know when you use a free software.
Commentaires
Dovecot does indeed rock. I use it for my personal mail. The indexes prove extremely useful.
One tip: when using mutt, remember to use the searches with = rather than ~. = searches for fixed strings, and can thus just hand the search to the IMAP server; ~ searches for regexes, and thus must search on the client side. I can search or limit huge folders with = searches very quickly.
I've been thinking about making a similar move. Did you use the migration documentation and script they provide at http://wiki.dovecot.org/Migration/C... ?
Yes at least for the script.