Quoting Ed W <li...@wildgooses.com>:
Hi, don't have an installation of anything approaching your size. However, I do regularly see folks missing out on the idea that its reasonably straightforward to have both Dovecot (old) and Dovecot (new) versions running at the same time and migrate users over slowly rather than in a big bang?
Yeah, we're actually now thinking that we should create a new cluster running dovecot 2.0, mount the existing control/maildir files from the current shared storage and then regenerate the indices before going live - would that work here? I'm struggling to find anything in the docs that state the control files will be affected by the upgrade.
Personally my own experience was that changing from v1 to v2 was a fairly unexciting upgrade (as the admin) other than the obvious (large) change in configuration required.
That's good to know... :)
Oh, one feature of Dovecot 2 which isn't on by default, but I have found very interesting is the "COMPRESS" IMAP feature. You need to enable a few config changes, but after that many clients can talk over a gzip'd tunnel, which in my testing leads to a decent reduction in bandwidth. It's especially nice for mobile use (eg Profimail on Nokia S60)
sounds v. cool... :D Thanks, Matt
