[Dovecot] dbox vs. mdbox

[Ed W]

Hi

> I really appreciate feedback. We're on a time-crunch to migrate from a debian 5 box w/ dovecot 1.1 to a debian 6 box w/ dovecot 2.0.9 (built from source).

I would have thought if time is tight then stick with what you know and 
migrate later?  If you aren't building your new box as a virtualised 
container of some sort then stop and consider that to be much more 
desirable... With a virtualised install you can easily spin up an 
alternative config and more easily migrate the format of the data 
separately to the config of the server?

Oh, I'm also a huge fan of the "proxy" feature which allows you to spin 
up a new machine/config, then migrate users across slowly rather than 
one big bang. You can use it with your current migration to test the 
upgrade for example?

According to the wiki, your answer to the dbox question is probably best 
given here:
     http://wiki2.dovecot.org/MailboxFormat/dbox

Good luck

Ed W