Kolab Server 2 and mailman

[Lorenzo Ortega]

    Hi all,

    I've installed kolab2.2 on a debian4. All runs perfectly with the 
domain.net. The problem starts when I try to integrate mailman 2.1.9 
with kolab (using 
http://wiki.kolab.org/index.php/Kolab2_Integration_with_mailman), with 
the domain lists.domain.net.
    When i send a mail to a created list, for example, 
people at lists.domain.net,  Postfix not "re-send" the mail to the list 
componentes.

    Could anybody help me?

    Thanks in advance!

    Lorenzo