[Mailman-Users] Weird response from a subscriber's mail server

Christian F Buser luscheina at yahoo.de
Thu Mar 23 12:05:14 EDT 2017

Hi all 

I have a new problem with our mailing list (Mailman 2.1.23 on cPanel 62.0.17 where a subscriber's provider rejects messages from the list. Not the usual way, where the message simply bounces; here the original sender of the list message receives a notification as shown in the attachment. 

The receiving address is a subscriber of the list for a long time, but these messages started to show up just today. 

What can I do to solve the problem? 

Thank you, Christian 
Christian F. Buser, Hohle Gasse 6, CH-5507 Mellingen (Switzerland)      
Hilfe fuer Strassenkinder in Ghana: http://www.chance-for-children.org

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