Msd: > Hello, > > I note in some rare case that Postfix tries to deliver an email to a > wrong MX server. > > I have opened a bug to describe my problem here : > https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1549388/ > > Do you know what happens ?
There was an MX lookup bugfix for Postfix 2.11 in May 2014. Wietse Bugfixes (fixed in Postfix 2.11 and Postfix 2.12): * With connection caching enabled (the default), recipients could be given to the wrong mail server. The root cause was an incorrect predicate. Due to this, the Postfix SMTP client could save and restore plaintext connections that should not be cached, under nonsensical lookup keys that did not distinguish by destination. Problem reported by Sahil Tandon.