The original message was received at Thu, 13 Aug 2009 11:42:31 +0200 from lists.jboss.org [143.250.40.171] ----- The following addresses had permanent fatal errors ----- <hibernate-commits(a)lists.jboss.org&gt; ----- Transcript of session follows ----- ... while talking to lists.jboss.org.: 550 5.1.2 <hibernate-commits@lists.jboss.org>... Host unknown (Name server: host not found)