Re: [Dovecot] Mailboxes separated from IMAP server

fine - so i make my answer more precise:

if it comes to that you should re-think your achitecture instead seek for workarounds which will hide the problem for some time and sonner or later make a re-design of the architecture much harder than starting to do so earlier

but your choice.....

Am 21.10.2013 22:25, schrieb Reymer Antonio Vargas Solano:

I know how HA n LB works, is just that is not what I'm looking for for example if you have and imap server that stores the mailboxes in a LUNs of a SAN, that only store the emails received for the postfix servers, transfered by LMTP way, how you can configure another IMAP server that use POP and IMAP protocols without access the SAN just communicating with the other Dovecot server...

On Mon, Oct 21, 2013 at 2:20 PM, Reindl Harald mailto:h.reindl@thelounge.net> wrote:

no i am not kidding you

what i linked is how in professional environments typically things
are done - virtually nobody would talk from one IMAP server to
another one to deliver mails to the client

with clustedred and replicated filesystems you have all servers
accesing the same mail storage and your DNS-record has all of
the servers listed

http://en.wikipedia.org/wiki/Round-robin_DNS

so before you assume someone is kidding you google how load balancing
is done in large environments, read the links others provide and if
you are not on a that large environment one server would be enough

Am 21.10.2013 22:10, schrieb Reymer Antonio Vargas Solano:
> Are you kidding me? Is not how or where to store the mailboxes... is how to connect an imap server to another
IMAP
> server that have mailboxes!
>
> On Mon, Oct 21, 2013 at 1:30 PM, Reindl Harald <h.reindl@thelounge.net <mailto:h.reindl@thelounge.net>
<mailto:h.reindl@thelounge.net <mailto:h.reindl@thelounge.net>>> wrote:
>
>
>
>     Am 21.10.2013 21:23, schrieb Reymer Antonio Vargas Solano:
>     > 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.
>     >
>     >  Can anyone give me  an idea?
>
>     http://en.wikipedia.org/wiki/Storage_area_network
>     http://en.wikipedia.org/wiki/Clustered_file_system