We have a postfix box setup to relay mail to a clients exchange box. It is used as a spam/virus gateway.
When email is sent from this one domain through our server it timesout reporting a 421 time exceeeded error. It work perfect for all domains but this one. Strangely it is not constent. I am in touch with the emailing domain's admin. He is able to reproduce the problem with a telnet test. I have not been able to reproduce it. Has anyone had similiar problems? Any ideas how I could troubleshoot this, or if maybe a setting I've missed? It is possible its on their end, but I suspect its our server configration. Thanks, Kevin
