Hi! Mailman re-uses the message-id of the original email. In our case an exchange user is recipient of two mailing-lists. Both mails are adressed in the original message, both lists distribute the list, two emails having the same message-id arrive at the Exchange server, which seems to discard the second mail.
Who's to blame? Mailman for re-using the message-id? Exchange for dropping the sencond mail on the floor? Logs: Mailman generates two mails (note the different Subject: lines): Nov 5 07:22:47 webmail postfix/cleanup[14648]: CE5BB4C80: warning: header Subject: [Rundmail Virchow-Klinikum] Nervenarztpokal from localhost.localdomain[127.0.0.1]; from=<rundmail-neuro-cvk-bounces+annette.schxxxxxxxx=charite...@charite.de> to=<annette.schxxxxx...@charite.de> proto=ESMTP helo=<webmail.charite.de> Nov 5 07:22:50 webmail postfix/cleanup[14650]: 1165D4E03: warning: header Subject: [Rundmail MITTE] Nervenarztpokal from localhost.localdomain[127.0.0.1]; from=<rundmail-neuro-ccm-bounces+annette.schxxxxxxxx=charite...@charite.de> to=<annette.schxxxxx...@charite.de> proto=ESMTP helo=<webmail.charite.de> and sends them (note the identical message-id in the 250 2.6.0 response): Nov 5 07:23:29 webmail postfix/smtp[14564]: CE5BB4C80: to=<schxx...@exchange.charite.de>, orig_to=<annette.schxxxxx...@charite.de>, relay=s-mx14-ht01.charite.de[10.32.37.105]:25, delay=41, delays=0/39/0.05/2.1, dsn=2.6.0, status=sent (250 2.6.0 <0cfda44554ab664bb2cad4064f9c5b409c1c2f3...@exchange41.charite.de> [InternalId=22196600] Queued mail for delivery) Nov 5 07:23:48 webmail postfix/smtp[14576]: 1165D4E03: to=<schxx...@exchange.charite.de>, orig_to=<annette.schxxxxx...@charite.de>, relay=s-mx14-ht01.charite.de[10.32.37.105]:25, delay=58, delays=0.01/55/0.06/3.4, dsn=2.6.0, status=sent (250 2.6.0 <0cfda44554ab664bb2cad4064f9c5b409c1c2f3...@exchange41.charite.de> [InternalId=22196727] Queued mail for delivery) Exchange only delivers one (the first) to the user's mailbox. -- Ralf Hildebrandt Charite Universitätsmedizin Berlin ralf.hildebra...@charite.de Campus Benjamin Franklin http://www.charite.de Hindenburgdamm 30, 12203 Berlin Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155 ------------------------------------------------------ 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
