dovecot - Aug 2012 - Hostname Based forwarding

Trying to figure out hostname based IMAP proxy forwarding.


I have two mail servers: 

  
mail.example.com
  
mail.fakedomain.ca
  
proxy server running dovecat/IMAPS, facing the Internet.


*Both* names are DNS resolve(able), but.., both are the *same IP address.*  

For example: Joe configures his email client

  username: joe at example.com

  IMAP Addr: mail.example.com


For example: Jane configures her email client

  username: jane at fakedomain.ca

  IMAP Addr: mail.fakedomain.ca


So, now all clients must change their user-name in their email client to
their full email address, because there is a Jane & Joe on "both"
servers
and..., dovecot proxies based on 'user name' 

Is there a way to proxy based on the host name the client has configured in
his/her email client?  (Like Apache VirtualHosts)

This would be ideal, as the clients can then go back to using just their
name as the username.

Thanks 

Rick




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Merrickville <merrickville at gmail.com> writes:
> Is there a way to proxy based on the host name the client has configured in
> his/her email client?  (Like Apache VirtualHosts)
I doubt it; the virtual name is not part of the IMAP protocol as it is
in HTTP.  The IMAP server is not told which hostname was mapped to its IP.

You'll either have to add the @domain, or perhaps multi-home your host,
remap one of your domains to the new IP, and add another running instance
of dovecot to listen on that interface.

Joseph Tam <jtam.home at gmail.com>

Thanks for the info.  That unfortunately does not make it as flexible as name
based hosting, too bad.



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