On Tue, 2009-12-01 at 10:03 -0500, Carlos Williams 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 >
This is a network issue and not a postfix issue. Try connecting to a.mx.premore.net using telnet on port 25. Check your routing tables to find out why a network connection to that host is not possible. > 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! -- Martijn de Munnik <mart...@youngguns.nl> YoungGuns
