This error is not recieved from the servers, it is from the mailclients such as Eudora/Outlook....
turn on byte-level logging in Eudora:
http://www.eudora.com/techsupport/ini.html#Heading12 also, the Imail logs but only for the SMTPD lines for the sessions that fail Len To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
