On Thu, 1 Dec 2011 16:46:00 -0500 (EST) Wietse Venema <wie...@porcupine.org> wrote:
> James Seymour: > > On Thu, 1 Dec 2011 16:27:07 -0500 (EST) > > Wietse Venema <wie...@porcupine.org> wrote: > > [snip] > > > I suggest that you use different smtp_bind_address settings in > > > master.cf for the (default) smtp transport and for the (inbound) > > > relay transport. > > > > This server is, amongst other things, a mail gateway. It accepts > > incoming on both interfaces, and sends on both. > > It sends outbound mail on both interfaces? > > It sends inbound mail on both interfaces? Bah! No. Incoming goes out the inside interface and outgoing out the outside interface :p. Sorry, I was in serious burnout mode after having been hacking on the new box since about 07:30. > > I would expect that inbound and outbound use different interfaces, > therefore you can use different delivery agents. And right you'd be. > > For the default smtp transport, use -o > smtp_bind_address=external-address > > Use a transport map to force inbound mail to use the "relay" > transport, and that one will automagically use the right source IP > address because there is only one to choose from. Done! Worked like a charm, Wietse. Thanks *very* much for your help. I'd already had all the transport entries. (Holdover from when our mail routing was significantly more complicated.) I simply had to replace the "smtp:"s with "relay:"s, in addition to the master.cf change, and it was done. Great :) Regards, Jim -- Note: My mail server employs *very* aggressive anti-spam filtering. If you reply to this email and your email is rejected, please accept my apologies and let me know via my web form at <http://jimsun.LinxNet.com/contact/scform.php>.
