On Fri, 5 Oct 2012, Robert Xu wrote: >Huh? So you are intentionally having emails bounce? Huh? No. The receiving MTA at my ISP rejected an email from the list with: Reporting-MTA: dns; vali.starlink.edu X-Postfix-Queue-ID: 0CC704560250 X-Postfix-Sender: rfc822; trinity-users-return-3521-trinity=jonz.net@... Arrival-Date: Thu, 6 Sep 2012 15:04:39 -0500 (CDT) Final-Recipient: rfc822; trinity@... Original-Recipient: rfc822;trinity@... Action: failed Status: 5.7.1 Remote-MTA: dns; mx4.operationenterprise.com Diagnostic-Code: smtp; 550 5.7.1 sender domain does not exist My (email) ISP said "sender domain does not exist". Here's one that Robert Xu inquired of me about (because it was from the list -- my list message being sent on to him.) Reporting-MTA: dns; vali.starlink.edu X-Postfix-Queue-ID: 8701F456024E X-Postfix-Sender: rfc822; trinity-users-return-3629-robxu9=gmail.com@... Arrival-Date: Sun, 23 Sep 2012 17:35:17 -0500 (CDT) Final-Recipient: rfc822; robxu9@... Original-Recipient: rfc822;robxu9@... Action: failed Status: 5.7.1 Remote-MTA: dns; gmail-smtp-in.l.google.com Diagnostic-Code: smtp; 550 5.7.1 Unauthenticated email is not accepted from this domain. k2si7073925igo.55 Xu's email provider (Gmail) reported "Unauthenticated email is not accepted from this domain." Lisi also reported a "warning from trinity-users@..." on September 22, but she did not inlude the report body showing the reason for the rejection. She showed the headers from the email notifying her of the rejection -- not the rejection report. (At least that's what I see at http://trinity-users.pearsoncomputing.net/?0::3615 ) I get one rejection notification every 10 days or so. So far the "warning from trinity-users@..." makes it to me and, so, ezmlm does not think me to be a 'hard bounce' (a no-longer-valid email addy.) One thing: I've been on the list since, maybe, back in April (or earlier), and I only think I've seen this 'problem' in the last 2 months or so. Jonesy