[Dovecot] Mailboxes separated from IMAP server

[Reymer Antonio Vargas Solano]

Sorry about the subject! Thanks for your time I'll try to implement dsync..

I pretend to use 2 dovecot servers because one of them just have the LMTP
protocol and the other one have the load of the connections that uses
protocols IMAP and POP

Regards,

ravs
ravs




On Mon, Oct 21, 2013 at 1:48 PM, Charles Marcus
<CMarcus at media-brokers.com>wrote:

> On 2013-10-21 3:23 PM, Reymer Antonio Vargas Solano <
> reymervargas at 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
> /*
>