[Dovecot] Questions still about a uw-imap -> dovecot conversion

[Steve Campbell]

The more I read about all of this, the more I'm thinking about moving to 
maildir format. My switchover this weekend is full of holes due to the 
way user's imap folders were laid out. Some had folders in their home 
directory and others might have folders in their /home/mail directory. 
Some how, Horde/Imp seemed to keep track of it. Dovecot is not doing so 
well.

I've been reading about the conversion technique to convert to maildir, 
but I'm wondering if I can do this based on the way our users are set 
up. Most are pop accounts. Our webmail is configured to read the inbox 
from /var/spool/mail and their imap folders from /home or /home/mail. 
Some have imap accounts on their desktop defined through their mail client.

RH/Centos seems to want me to switch to postfix since most of the 
documentation I find doesn't mention Sendmail. My filesystem is laid out 
to handle Inboxes in /var/spool/mail and imap folders in /home(/mail) 
and these aren't logical volumes but true partitions, so I've got to 
consider this as I make any changes.

I also run pop using dovecot, so I'll need to figure all this out.

I've read the technique linked to on the dovecot site that points to 
"Replacing UW-IMAP with Dovecot on RHEL 3" written back in 2004, and 
that's about the only real pointers I'm finding.

I don't want to have to go around to each machine and change their 
clients to IMAP..

Anyone care to comment on anything similar they've done and how many 
pitfalls they ran into and what they were?

steve campbell