On Tue, 1 Dec 2009 10:03:21 -0500, you wrote: >I am getting a report from someone on my network that they are getting >delivery failures when attempting to send an email from my Postfix >server to the remote mail server. I see the message stuck on my >Postfix servers queue: > >CB87E778055 1337 Mon Nov 30 08:59:15 tprem...@iamghost.com > (connect to a.mx.premore.net[198.186.193.20]: No route to host) > b...@premore.net > >I am guessing that this is a problem with the remote mail server >'a.mx.premore.net' since my server is sending and receiving email just >fine to every other destination. I then decided to do a MX lookup for >this domain "premore.net" & see if there is anything wrong: > >;; QUESTION SECTION: >;premore.net. IN MX > >;; ANSWER SECTION: >premore.net. 3093 IN MX 0 a.mx.premore.net. > >;; ADDITIONAL SECTION: >a.mx.premore.net. 3093 IN A 198.186.193.20 > >However my mail server wont send to this destination address and I >have no idea why. Can someone tell me how I can better examine this >situation to understand where the fault lies. > >Thank you!
Unless I'm misreading and misunderstanding your logs.... # telnet 198.186.193.20 25 Trying 198.186.193.20... telnet: connect to address 198.186.193.20: Operation timed out telnet: Unable to connect to remote host The mail server on that IP isn't answering.
