CentOS 4.6
Hi All:
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?
The problem is that we have a client that uses the same ISP as we do and the IP addresses assigned to both of us are very close. This has resulted in connection problems specifically with our outbound email to the client. I believe it is an issue with TCP/IP routing. In the past the ISP has setup some sort of special routing that redirects our email to the ISP's backup mail server which then delivers the mail to the client. Every once in a while the ISP does something with their configuration and the routing override is lost for several days until we can get them to recognize the problem and then figure out what they did the last time. This happened over the weekend and we are still waiting on the ISP to fix it up.
My thought was can we configure this in our mail server so that we and our client do not have to suffer with this again?
TIA
Regards, Hugh