[vPostMaster] Mailman permissions problem with Ubuntu 6.06LTS

[Ecomshare]

Hello,

Been looking at getting the mailman interface going on the vpostmaster
pro setup and having some problems.

Got rid of-> FAILED: Mailman binary directory is not set.
Using:
   su postgres
   psql -d vpostmaster
   update meta set mailmanmailcmd = '/usr/lib/mailman/mail/mailman';
   update meta set mailmanvardir = '/var/lib/mailman';
   update meta set mailmanbindir = '/usr/lib/mailman/bin';

Then got errors on adding a list:
 File "/usr/lib/mailman/bin/newlist", line 226, in ?
 main()
 File "/usr/lib/mailman/bin/newlist", line 106, in main
 os.setgid(gid)
OSError: [Errno 1] Operation not permitted

Figured that had something to do with permissions so I ran the:
usermod -G mailman vpostmaster

but I'm being told that "usermod: unknown group mailman"

So now I'm thinking that there are likely to be some permission issues
across the system.  Can someone provide the permissions that will be
needed for mailman to be happy with vpostmaster? This was a clean
install (at some point anyway!) v2.20 on Ubuntu LTS 6.06.

Thanks for any help and hope this helps someone else :-)