This is definitely a blacklist issue. When you see the message "the server refused to talk to me" it means that the ip address where the mailman messages are coming from is on their blacklist.
To resolve this the host provider where the mailman list in question resides needs to contact the internet service provider that is blocking the message and work with them to get them to lift the block. I have had to do this many times with different internet service providers. Each provider has a different process that you have to go through to get the block lifted. Most of them, the administrator of the mailman host provider has to fill out a form online to explain that they are not a spammer. I am the server administrator for an organization known as the American Council of the blind and I ended up routing our smtp services through a service called mandrill which is put out by Mail Chimp. This put an end to the constant problem of internet service providers blacklisting our servers since we have a lot of mailman lists. I also recommend the munge from option because many host providers such as yahoo have a DMarc policy in place that will cause bounce messages to occur often. Hope that helps. Larry Turnbull ACB Radio Managing Director and ACB Server Administrator -----Original Message----- From: Mailman-Users [mailto:mailman-users-bounces+larry=acbradio....@python.org] On Behalf Of Richard Damon Sent: Sunday, February 14, 2016 6:32 AM To: mailman-users@python.org Subject: Re: [Mailman-Users] Users complain, they don't receive mails from the list Have you contacted the provider as mentioned in the bounce message, THEY need to look at the logs to see what is the problem. The fact that the diagnostic code header ends in (BL) makes me wonder if you are on some sort of Blocking List, but that is just a guess, The admin at t-online.de will have to confirm and if so let you know what list. On 2/14/16 3:13 AM, Sascha Rissel wrote: > Hi, > > again I'm getting bounces for one specific provider: Germany's T-Online. > The bounce log itself doesn't show something worth mentioning, but > here's the bounce message I'm receiving. > > Could you maybe have a look? > > Kind regards, > Sascha. > > This is a Mailman mailing list bounce action notice: > > List: rcworms-vorstand > Member: some_u...@t-online.de > Action: Subscription disabled. > Reason: Excessive or fatal bounces. > > > > The triggering bounce notice is attached below. > > Questions? Contact the Mailman site administrator at > mail...@euve103340.serverprofi24.de. > > > ---------- Weitergeleitete Nachricht ---------- > From: Mail Delivery System <mailer-dae...@lists.rc-worms.de> > To: rcworms-vorstand-boun...@euve103340.serverprofi24.de > Cc: > Date: Sat, 13 Feb 2016 12:38:02 +0000 (UTC) > Subject: Undelivered Mail Returned to Sender This is the mail system > at host lists.rc-worms.de. > > I'm sorry to have to inform you that your message could not be > delivered to one or more recipients. It's attached below. > > For further assistance, please send mail to postmaster. > > If you do so, please include this problem report. You can delete your > own text from the attached returned message. > > The mail system > > <some_u...@t-online.de>: host mx03.t-online.de[194.25.134.73] refused > to talk to > me: 554 IP=62.138.1.209 - A problem occurred. (Ask your > postmaster for help > or to contact t...@rx.t-online.de to clarify.) (BL) > > Final-Recipient: rfc822; some_u...@t-online.de > Original-Recipient: rfc822;some_u...@t-online.de > Action: failed > Status: 4.0.0 > Remote-MTA: dns; mx03.t-online.de > Diagnostic-Code: smtp; 554 IP=62.138.1.209 - A problem occurred. (Ask your > postmaster for help or to contact t...@rx.t-online.de to > clarify.) (BL) > -- Richard Damon ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/larry%40acbradio.org ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org