Mailman-Users

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mailman-users@python.org

May 2025

5 participants
2 discussions

Writing to list bounces with 'user doesn't exist'
by Sean McBride May 14, 2025

May 14, 2025

Hi all, So I have/had a working postfix+dovecot setup, and then I installed mailman2. It largely works. The web interface works, I can create lists, list creation emails are sent to the admin (me), but trying to write to a list (as a member) fails with a bounce. My maillog shows: ``` May 12 12:19:48 hostname postfix/lmtp[83792]: ED07A32156: to=<testlist(a)example.com>, relay=mx.example.com[private/dovecot-lmtp], delay=0.6, delays=0.59/0/0/0.01, dsn=5.1.1, status=bounced (host mx.example.com[private/dovecot-lmtp] said: 550 5.1.1 <testlist(a)example.com> User doesn't exist: testlist(a)example.com (in reply to RCPT TO command)) ``` Indeed I wouldn't expect dovecot to know any such user, so I'm not sure what step I've missed... In my postfix main.cf I have: ``` mydomain = example.com myhostname = mx.example.com mydestination = $myhostname localhost.$mydomain localhost myorigin = $mydomain virtual_alias_maps = hash:/usr/local/etc/postfix/virtual-aliases, hash:/usr/local/mailman/data/virtual-mailman alias_maps = hash:/etc/aliases, hash:/usr/local/mailman/data/aliases ``` In my mm_cfg.py I have: ``` MTA = "Postfix" POSTFIX_STYLE_VIRTUAL_DOMAINS = ['example.com'] DEFAULT_EMAIL_HOST = 'example.com' DEFAULT_URL_HOST = 'mailman.example.com' VIRTUAL_HOSTS.clear() add_virtualhost(DEFAULT_URL_HOST, DEFAULT_EMAIL_HOST) ``` Any clues would be greatly appreciated. Thanks, Sean

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Is postfix owner_request_special needed for mailman2?
by Sean McBride May 8, 2025

May 8, 2025

Hi all, I'm migrating a server with older postfix & older mailman2 and noticed one setting in postfix's main.cf: owner_request_special = no The postfix docs for this setting say: "Enable special treatment for owner-listname entries in the aliases(5) file, and don't split owner-listname and listname-request address localparts when the recipient_delimiter is set to "-". This feature is useful for mailing lists." Which I don't really grok. I'm not sure why it's set to `no` on the older server. Any thoughts? Thanks, Sean

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