backend_connect source address and config_servername

Ken Murchison murch at
Mon Mar 6 14:54:12 EST 2006

Bron Gondwana wrote:
> Hi,
> I'm working on setting up replication for our (FastMail.FM) new servers.
> One issue I've run in to is that our machines are set up as follows:
> 10.*: imap<$n>.internal
> 66.111.4.*: imap<$n>
> Now we can argue all we like about whether the IMAP servers should have
> an external network connection at all (it's pretty heavily firewalled,
> but for various hysterical reasons I can't cut their direct outside
> connection just yet.
> So - I'd very much prefer config_servername to contain
> imap<$n> since that's what the world sees on the
> connection string - but when I do that, backend_connect binds the
> _source_ of its TCP connections to the external IP address, despite
> being asked to make a connection to another 10.* address.

Are you saying that you have sync_host set to imap<$n>.internal, but 
sync_client is connecting to imap<$n>

Kenneth Murchison
Systems Programmer
Project Cyrus Developer/Maintainer
Carnegie Mellon University

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