On 2013-10-21 3:23 PM, Reymer Antonio Vargas Solano <reymervargas@gmail.com> wrote:
At my university we are trying to implement a distributed email backend, but I have some troubles,
The topology:
Server A: Postfix+LMTP # MTA Server B: Dovecot+LMTP # Just mailboxes Server C: Dovecot # POP3/IMAP
Right now the Server A can leave a received email to the Server B, but I don't know how to communicate Server C to the Server B to retrieve the emails.
I think that we should use IMAP protocol, but I am confused about how to connect them, I don't know if we have to use a proxy IMAP server, or another thing.
It all depends on what you want to accomplish...
First, I'm guessing your subject is not precisely correct - the IMAP server IS 'the mailboxes'...
So, I guess you meant separate MTA and IMAP servers?
If so, then...
a) you could set up dsync to sync server C with B
b) you could do the same with imapsync (best to use dsync though, unless you're stuck with dovecot versions prior to 2.2.# due to brain-dead distro limitations or corporate policies)
c) you could use some kind of distributed filesystem
Why the 2 dovecot servers? If it is for load, how many users on each (maybe you don't need 2)? If for redundancy, then definitely dsync, but there are other issues to consider (if HA is your goal)...
--
Best regards,
*/Charles /*