[Dovecot] Proxy IMAP/POP/ManageSieve/SMTP in a large cluster enviroment

[Timo Sirainen]

On Sun, 2010-07-18 at 18:22 -0300, Aliet Santiesteban Sifontes wrote:
> 
>      - In case we use a Proxy with dovecot we know we can use it with
> IMAP/POP but are not sure for ManageSieve and more important for SMTP. The
> question is, how can we proxy for the same user IMAP/POP/ManageSieve and
> SMTP delivery to mailbox at the same time, can the incoming mail gateways
> send the email to the proxy servers and dovecot proxy the request for smtp
> or lmtp appply the same proxy criteria that uses for the protocols IMAP and
> POP and send the email to the correct backend server and this server do the
> final delivery?? I mean proxy all the protocols for a user
> IMAP/POP/SMTP-LMTP?? Any example...

ManageSieve can be proxied exactly the same as IMAP/POP3. Use LMTP for
mail delivery and then you don't need to worry about SMTP. So you can
use Dovecot proxying for IMAP, POP3, ManageSieve and LMTP.