Hi and hope the answer(s) to my question are relatively simple. On one of two lists I manage, some people are getting deleted due to too many bounces. And the bounces seem to be related to their mail provider not allowing the messages. As far as I can tell, the main culprits are gmail, yahoo, and hotmail.

Of course, those people blame Mailman. From what i have read, it is not necessarily that. But complicating things is that people were complaining that the default REPLY to SENDER was not appropriate for a discussion list, so I just switched it over to REPLY TO GROUP. I do not THINK that is the reason for the trouble, but here in the space of a few minutes are some of the messages I have gotten with my questions in caps.

(On the other hand, we didn’t have this issue UNTIL I switched to reply to the list. So I am wondering if there IS indeed a connection. Also unsure if this is a problem with the user not being able to receive mail, send mail, or both so far).

PROBLEM ONE: UNABLE TO SEND AND/OR RECEIVE EXAMPLES FROM YAHOO AND HOTMAIL

a@yahoo.com mailto:a@yahoo.com host mta7.am0.yahoodns.net http://mta7.am0.yahoodns.net/ [66.196.118.37] SMTP error from remote mail server after end of data: 554 5.7.9 Message not accepted for policy reasons. See https://help.yahoo.com/kb/postmaster/SLN7253.html https://help.yahoo.com/kb/postmaster/SLN7253.html

SEEMS TO BE YAHOO DOES NOT LIKE MAILMAN AND ALSO SHE CANNOT ADD MAILMAN TO A WHITE LIST (YAHOO DO NOT HAVE!!!!).—>

IS IT POSSIBLE SHE IS USING A MAIL CLENT THAT DOES NOT SEND CORRECTLY? OR IS THIS THE YAHOO INTERFACE?

IS THIS HER MESSAGE BEING SENT OR HER MAIL PROGRAM NOT ACCEPTING MESSAGES?

RELATED TO THIS:

Some people are getting unsubscribed as a result:

List: Galeexec Member ie@hotmail.com mailto:mccandie@hotmail.com Action: Subscription disabled. Reason: Excessive or fatal bounces.

CAUSE OF ALL THE ABOVE? SOLUTIONS—BY LIST OWNER? BY MEMBER?

NEXT EXAMPLE OF SAME hn@hotmail.com mailto:hn@hotmail.com host hotmail-com.olc.protection.outlook.com http://hotmail-com.olc.protection.outlook.com/ [104.44.194.233] SMTP error from remote mail server after end of data: 550 5.7.0 (SNT004-MC7F11) Unfortunately, messages from (199.223.209.221) on behalf of (yahoo.com http://yahoo.com/) could not be delivered due to domain owner policy restrictions.

SAME THING? I note the user has a hotmail address.

CAUSE OF THE ABOVE? SOLUTIONS—BY LIST OWNER? BY MEMBER?

BELOW THAT IS MORE INFO (RELATED TO THE ABOVE?)

RESPECTIVELY

Action: failed Final-Recipient: rfc822;ya@yahoo.com mailto:quenbya@yahoo.com Status: 5.0.0 Remote-MTA: dns; mta7.am0.yahoodns.net http://mta7.am0.yahoodns.net/ Diagnostic-Code: smtp; 554 5.7.9 Message not accepted for policy reasons. See https://help.yahoo.com/kb/postmaster/SLN7253.html https://help.yahoo.com/kb/postmaster/SLN7253.html

Action: failed Final-Recipient: rfc822; hn@hotmail.com mailto:hn@hotmail.com Status: 5.0.0 Remote-MTA: dns; hotmail-com.olc.protection.outlook.com http://hotmail-com.olc.protection.outlook.com/ Diagnostic-Code: smtp; 550 5.7.0 (SNT004-MC7F11) Unfortunately, messages from (199.223.209.221) on behalf of (yahoo.com http://yahoo.com/) could not be delivered due to domain owner policy restrictions.

There are others like this and they all share one of the two providers.

PROBLEM TWO Though GMAIL USERS have reported messages in SPAM. No errors messages to the list.

CAUSE OF THE ABOVE? SOLUTIONS—BY LIST OWNER? BY MEMBER?

Thank you very much.

Paul Arenson Japan