[Mailman-Users] mailman problem

[mehmood hasan]

Hi
I configured the mailman, I am facing some problems like that,
Creation of new mail list is successfull and it also subscribe users added 
for that list and confirm their subscription through e-mail
but when I send e-mail "cit at uaar.edu.pk "to the list "cit" created the 
following error occures

"""""""""""""""""""""""""""""""""""""""""""""""""
The original message was received at
Tue, 18 May 2004 17:47:36 +0600
from [192.168.1.228]
   ----- The following addresses had permanent fatal errors -----
"|/usr/local/mailman/mail/mailman post cit"
    (reason: Service unavailable)
    (expanded from: <cit at uaar.edu.pk>)
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""

I edit the " /usr/local/mailman/Mailman/mm_cfg.py" like that

IMAGE_LOGOS = '/html/'

DEFAULT_EMAIL_HOST = 'uaar.edu.pk'
DEFAULT_URL_HOST = 'mail.uaar.edu.pk'
add_virtualhost(DEFAULT_URL_HOST, DEFAULT_EMAIL_HOST)

and made the following enteries in /etc/httpd/conf/httpd.conf file

##Mailman Aliases
ScriptAlias /mailman/ "/usr/local/mailman/cgi-bin/"

Alias /pipermail/ "/usr/local/mailman/archives/public/"
<Directory "/usr/local/mailman/archives/public">
  Options FollowSymLinks
</Directory>
Is their any solution for my problem

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