[Dovecot] Mailboxes separated from IMAP server

[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 <h.reindl at 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 at thelounge.net<mailto:
> h.reindl at 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
>
>