The server’s version of Mailman (list software) is out of date and is causing the problem. The server is running v2.1.9 and needs to be running v2.1.18-1 (or later if there’s another update). AOL, Yahoo, and several other large email providers made a change about a month ago (referred to as DMARC) that has caused significant problems with email lists. Basically the problem stems from the list email appearing to be sent from the individual. AOL (Yahoo/etc.) sees an email that claims to be sent from w3kd@aol.com, but knows that the email didn’t come from the AOL servers so it rejects it. The email list software (Mailman) sees this as a bounced email and now thinks w3kd@aol.com is a bad address and suspends it. Within the latest Mailman control panel is an option that shows the emails as sent by the list server on behalf of the individual. I dealt with this issue on several lists I run… Doug K4AC From: arrl-odv-bounces@reflector.arrl.org [mailto:arrl-odv-bounces@reflector.arrl.org] On Behalf Of Chris Imlay Sent: Tuesday, June 10, 2014 12:40 PM To: arrl-odv-request@reflector.arrl.org Subject: [arrl-odv:22821] Re: confirm 0bd85850610534a061222e3e0ec5c088e6b6221f Christopher D. Imlay Booth, Freret & Imlay, LLC 14356 Cape May Road Silver Spring, Maryland 20904-6011 (301) 384-5525 telephone (301) 384-6384 facsimile W3KD@ARRL.ORG -----Original Message----- From: arrl-odv-request <arrl-odv-request@reflector.arrl.org> To: w3kd <w3kd@aol.com> Sent: Tue, Jun 10, 2014 12:32 pm Subject: confirm 0bd85850610534a061222e3e0ec5c088e6b6221f Your membership in the mailing list arrl-odv has been disabled due to excessive bounces The last bounce received from you was dated 10-Jun-2014. You will not get any more messages from this list until you re-enable your membership. You will receive 3 more reminders like this before your membership in the list is deleted. To re-enable your membership, you can simply respond to this message (leaving the Subject: line intact), or visit the confirmation page at http://reflector.arrl.org/mailman/confirm/arrl-odv/0bd85850610534a061222e3e0... You can also visit your membership page at http://reflector.arrl.org/mailman/options/arrl-odv/w3kd%40aol.com On your membership page, you can change various delivery options such as your email address and whether you get digests or not. As a reminder, your membership password is xxxxxxxxxxxxxxxxxxxxx If you have any questions or problems, you can contact the list owner at arrl-odv-owner@reflector.arrl.org