[Mailman-Users] postfix-to-mailman.py and local_recipient_tables

Mark Sapiro mark at msapiro.net
Thu Aug 19 00:38:54 CEST 2010

Florian Effenberger wrote:
>I run Mailman and Postfix together using postfix-to-mailman.py, and it
>worked without any problems. All of a sudden, Mailman lists could not
>be reached anymore with an "User unknown" code. After lots of digging
>into the problem, adding
>local_recipient_tables =
>to my main.cf solved the problem. It looks like that Postfix is not
>able to determine valid mailing list recipients. I'd like to avoid
>setting local_recipient_tables to null, as it has some drawbacks.
>Anyone has an idea on where the problem lies?

This is really a Postfix question, not a Mailman question, but
postfix_to_mailman.py is designed to work with a dedicated domain
which receives all and only Mailman list mail.

There needs to be an entry in Postfix's transport_maps specifying a
'mailman' transport for that domain and an entry in Postfix's
master.cf defining that transport as a pipe to postfix_to_mailman.py.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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