Ed W wrote:
http://wiki.dovecot.org/HowTo/ImapProxy
Works quite well here.
This is very interesting
Does it work ok if you want to have one machine handle the nearly all the normal IMAP traffic, but it has the ability to proxy a few users to a different server?
ie do you need to set it up as a proxy in front of another server, or can you have a hybrid server?
We have dedicated proxies, but I doesn't look difficult to proxy some connections and not others. Just add the appropriate fields, it would seem, though I've never tried it.
In conjuction with some kind of imap folder sync this would be quite cool in a multi-office setup where you can then easily move users mailbox to the closest server where they are working and a few DNS tricks would allow them to turn up in any office and immediately start working.
We use mysql for the backend so it simply requires an UPDATE statement to point a user to a different drbd storage set. We use rsync to move domains from set to set when necessary.