26 Jan
2012
26 Jan
'12
2:38 p.m.
On Thursday 26 January 2012 04:31:20 Gedalya wrote:
I'm facing the need to migrate from a proprietary IMAP server to Dovecot. The migration must be as smooth and transparent as possible.
Ignoring the migration of individual mailboxes addressed in other replies, I trust you've met Perdition - very useful for this sort of situation, http://horms.net/projects/perdition/
to provide an IMAP "Server" (actually proxy) that knows where the real mailboxes are located, and directs connections accordingly. That way you can migrate mailboxes one-by-one as you've migrated them, helpful to test a few mailboxes first without affecting the bulk of users' mailboxes atall.
cheers,
Andrew.