The original message was received at Sun, 20 Dec 2009 12:47:47 +0530 from lists.jboss.org [81.60.39.171] ----- The following addresses had permanent fatal errors ----- <hibernate-dev(a)lists.jboss.org&gt; ----- Transcript of session follows ----- ... while talking to 175.209.140.172: 554 5.0.0 Service unavailable; [161.40.136.29] blocked using bl.spamcop.net Session aborted