You may encounter message too large on default postfix configuration. You can check your default limit by ‘postconf -d | grep message_size_limit’ The original message was received at Sat, 3 Mar 2007 12:47:00 +0800 (EAT) from [xxx.xxx.xxx] —– The following addresses had permanent fatal errors —– <info_AT_walkmen.net> (reason: 552 Error: message too large) —– Transcript [...]