[Dovecot] Mailboxes separated from IMAP server

[Reindl Harald]

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

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