> This message was RETURNED TO your mailman service. > That does not prove that it was SENT FROM your mailman service.
That is a great point. So, I dug a little deeper into the mail log and found what I believe is the outbound information: Oct 1 09:39:07 company-app02-listserv postfix/smtpd[3961]: E76C920940: client=localhost[127.0.0.1] Oct 1 09:39:07 compnay-app02-listserv postfix/cleanup[4806]: E76C920940: message-id=<134991659.4727316.6483022582862.javamail....@ela8-app6347.pr od> Oct 1 09:39:07 company-app02-listserv postfix/qmgr[13878]: E76C920940: from=<mailman-boun...@list.org>, size=2310, nrcpt=1 (queue active) Oct 1 09:39:08 company-app02-listserv postfix/smtp[4829]: E76C920940: to=<us...@yahoo.com>, relay=mail87.messagelabs.com[216.82.250.19]:25, delay=0.47, delays=0.01/0.01/0.21/0.24, dsn=2.0.0, status=sent (250 ok 1349098748 qp 17644 server-15.tower-87.messagelabs.com!1349098748!14396185!1) Oct 1 09:39:08 company-app02-listserv postfix/qmgr[13878]: E76C920940: removed With this information in the bounced email: Received: from company-app02-listserv.custcbb.local (localhost [127.0.0.1]) by mail.company.org (Postfix) with ESMTP id E76C920940; Mon, 1 Oct 2012 09:39:07 -0400 (EDT) If this is not correct, please let me know - else what other steps I can take to try to resolve this issue. Rose