From: Frank Cox Sent: April 9, 2008 20:01 > > On Wed, 09 Apr 2008 19:54:28 -0700 > Hugh E Cruickshank <hugh at forsoft.com> wrote: > > > Is it possible to force sendmail to use a specified host name for > > outbound email to a selected domain name instead of the host name > > that can be found by looking up the DNS entry? > > I'm not entirely sure that I understand your problem. If you > have a unique > domain name, and your client also has a unique domain name, and > your dns > records are properly configured, then sending email from domain > name A to domain > name B should just work, regardless of how close your actual IP > addresses are. I agree whole heartedly that it "should just work" but time and time again we have see where it does not work. > Having said that, you can put a domain name and IP address in > /etc/hosts on the > originating computer and that computer will henceforth use the IP > address > specified there. That would work if I was looking to use a specific IP address but would like to use a specific host name. For example I would like all mail outbound to example.com to bypass the DNS/MX entry of mail.example.com and use instead backupmx.isp.com not just the IP Address of backupmx.isp.com. Thanks muchly for your suggestion. Regards, Hugh -- Hugh E Cruickshank, Forward Software, www.forward-software.com