On 2/24/25 05:36, t.maintz@fz-juelich.de wrote:
Can you tell me how to implement this in Postfix?
Here's what we do on mail.python.org which supports both Mailman 2.1 and Mailman 3 lists. We also use an alias domain as described at https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/docs/mta.ht... because python.org is a virtual_alias_domain. The relevant settings in main.cf are
alias_maps = ... hash:/srv/mailman/data/aliases lmtp_destination_recipient_limit = 1 recipient_delimiter = + relay_domains = hash:/opt/mailman/mm/var/data/postfix_domains transport_maps = ... hash:/opt/mailman/mm/var/data/postfix_lmtp virtual_alias_domains = python.org ... virtual_alias_maps = ... hash:/srv/mailman/data/virtual-mailman hash:/opt/mailman/mm/var/data/postfix_vmap
The alias_maps and the hash:/srv/mailman/data/virtual-mailman setting in virtual_alias_maps are MM 2.1 settings. The hash:/opt/mailman/mm/var/data/* settings are MM 3.
Since transport_maps takes priority over aliases, if there is a MM 3 list in hash:/opt/mailman/mm/var/data/postfix_lmtp, mail for that list will be delivered to MM 3 via LMTP. If not, and the destination is a MM 2.1 list, delivery will be via the virtual_alias_mapping hash:/srv/mailman/data/virtual-mailman
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan