[Mailman-Users] errors using DELIVERY_MODULE = 'Postfix'

[Brian York]

Whe i set DELIVERY_MODULE = 'Postfix' i get the following error repeated 
several times on the console.
---------------------------------------------------------------------------------------
Traceback (most recent call last):
  File "/var/mailman/bin/qrunner", line 270, in ?
    main()
  File "/var/mailman/bin/qrunner", line 217, in main
    qrunner = make_qrunner(*runners[0])
  File "/var/mailman/bin/qrunner", line 123, in make_qrunner
    qrunner = qrclass(slice, range)
  File "/var/mailman/Mailman/Queue/OutgoingRunner.py", line 57, in __init__
    mod = __import__(modname)
ImportError: No module named Postfix
---------------------------------------------------------------------------------------

What is missing or what is wrong?
I can send to the list and stuff gets posted but messages don't get sent out. 
I have been trying with DELIVERY_MODULE = 'SMTPDirect' but that didn't work 
so since i'm using postfix i decided that would be another option. But i get 
the above error when i start mailmanctl.

mm_cfg.py - http://listserv.nku.edu/mm_cfg
mailman smtp log - http://listserv.nku.edu/smtp
mailman smtp-failure log - http://listserv.nku.edu/smtp-failure
maillog - http://listserv.nku.edu/maillog

Thanks
Brian York