On 03/07/2015 07:21 PM, Chris Schanzle wrote:
> I've had good luck with imapsync[1] to make backup copies to another
> IMAP server.
+1 for imapsync. It works in a very simple way, no major complexities.
It is used in many cases by people migrating from Exchange or similar to
open source groupware solutions such as Zarafa, Scalix, or
Opengroupware.org. It is well-tested, and lots of people know how to
drive it, so it's not difficult to find help from others.