Today I received a lot of unsubscription notifications for a certain list. I grew suspicious and had a closer look. I found that Postfix was retrying the delivery for a lot of domains behind the same MX and was (finally) reporting the delivery after a long time of queueing for that MX host.
This was due to my non-default setting: confirm_delay_cleared = yes After sending a "your message is delayed" notification, inform the sender when the delay clears up. This can result in a sudden burst of notifications at the end of a prolonged network outage, and is therefore disabled by default. The side effect was that these notifications increased the bounce score, although the delivery was successful. -- Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 ralf.hildebra...@charite.de https://www.charite.de ------------------------------------------------------ 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
