[Dovecot] Mailboxes separated from IMAP server

[Reymer Antonio Vargas Solano]

Ok, thanks for your time Reindl Harald, I'll consider your ideas!


On Mon, Oct 21, 2013 at 2:29 PM, Reindl Harald <h.reindl at thelounge.net>wrote:

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