[Mailman-Users] Problem with Postfix virtual Domains

[Jan-Simon Winkelmann]

Hi!

As I posted previously, I am running a postfix/cyrus mailserver combination
along with mailman.
There is no problem with the mailing lists as long as I stick to the 
original
configuration for the domain:

DEFAULT_EMAIL_HOST = 'webnauts.net'
DEFAULT_URL_HOST = 'www.webnauts.net'
MTA = 'Postfix'
POSTFIX_STYLE_VIRTUAL_DOMAINS = ['webnauts.net']
add_virtualhost(DEFAULT_URL_HOST, DEFAULT_EMAIL_HOST)

As soon as I change the config to:

DEFAULT_EMAIL_HOST = 'lists.webnauts.net'
DEFAULT_URL_HOST = 'www.webnauts.net'
MTA = 'Postfix'
POSTFIX_STYLE_VIRTUAL_DOMAINS = ['lists.webnauts.net']
add_virtualhost(DEFAULT_URL_HOST, DEFAULT_EMAIL_HOST)

I want this so I i can still have the same mail aliases on the 
lists.webnauts.net virtual domain
as i have on my main domain.

Problem being: if i now try to post to a list created with the modified 
configuration, i get an error
from the MTA, mail getting bounced:

Oct 27 09:57:18 webnauts postfix/smtp[7808]: 820ED608167: 
to=<test2 at lists.webnauts.net>, relay=none, delay=0, status=bounced (mail 
for lists.webnauts.net loops back to myself)

Does anyone know why this happens? I've been googling about this for 
hours and I just can't find anything "proper" on the topic.


best wishes,
Jan