[Mailman-Users] Question re: creating new lists from the GUI

Mark Sapiro mark at msapiro.net
Sun Aug 3 05:15:27 CEST 2008

Simon wrote:
>I have just upgraded mailman from 2.1.9 to 2.1.11 and everything is 
>working fine as far as existing lists is concerned.
>This issue has to do with creating new lists from the GUI. I created a 
>list and was able to log into its admin interface and manage the config 
>without any apparent problems.
>But when I send a test message to the list, I get an error 'user unknown 
>in virtual mailbox table' (yes I'm using postfix)...
>Obviously the mailman aliases are not getting generated, but I'm not 
>sure where to look to fix it... I've googled for a while now, but 
>haven't managed to find the magic keywords to find the answer.

The fact that you are getting 'user unknown in virtual mailbox table'
tells me that your list domain is a postfix virtual domain. You need
to go to <http://www.list.org/mailman-install/node12.html> and do the
things outlined in both subsections 6.1.1 and 6.1.2.

In mm_cfg.py you need

MTA= 'Postfix'


POSTFIX_STYLE_VIRTUAL_DOMAINS = ['list.example.com']

(with your real domain of course). See the documentation for this in

You also need to reference data/aliases and data/virtual-mailman in
your postfix main.cf as outlined in the manual linked above.

If you have further questions about this, please ask.

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

More information about the Mailman-Users mailing list