On 11/23/2011 9:52 AM, Islam, Towhid wrote: > I have been puzzled over this for a while and do not know what causes the > problem or what is really happening. > > I have two internet mail relay servers, let's call them mr1 and mr2. Both > are identical in configuration but have different host names and ip addresses > are running simultaneously. Every now and then I notice that some incoming > mail is stuck in mr1's mail queue because it tries to contact/send the mail > to mr2 where it times out. Something like: > > 6E60C5F3CAF 2784 Wed Nov 23 10:26:04 > tis...@yahoo.com<mailto:tis...@yahoo.com> > (connect to mr2.junk.com[xx.xxx.xx.xx]:25: Operation > timed out) > > My question is why does this happen? Why does mr1 try to connect to mr2 > where it times out for some reason? Why does it not accept (receive) the > (incoming) mail from yahoo itself and process for delivery (to the next hop > which is located on the other side of the firewall)? How do the resolve the > problem? Thanks.
Show un-obfuscated output of 'postconf -n' from both servers. And list the domain(s) in question so we can lookup their MX records. Do these servers host more than one domain? -- Stan