[Mailman-Users] Request help: MM 2.1.5 Install on BSD; setGID errors.

[hesco at greens.org]

Hello folks:  

I'm coaching a friend on installing MM on a BSD server.
I use and administer a Debian box myself here at the office.
While I administer (in the sense of creating lists and
assigning moderators) an installation of MM on someone else's
Debian machine that I do not administer, I have never actually
installed it myself.  I know nothing of BSD, except that being
in jail seems to keep me from exploring configuration files.
My friend did add me to the wheel group which helped some.

The config.log reports:  
***** Installation directory /usr/local/mailman is not configured
properly!
***** Set-gid bit must be set for directory: /usr/local/mailman

bash-2.05$ pwd
/usr/local/mailman
bash-2.05$ ls -al
total 4
drwxrwxr-x   2 root  mailman  512 Aug 12 05:38 .
drwxr-xr-x  21 root  wheel    512 Aug 12 03:28 ..
bash-2.05$ 

Although I see no indication of it here, we did run a chmod 4755
on this directory.  Tried the chmod g+s . at a prompt as well.

Still we get this error.  Is there any way to get ls to show
permissions as numbers, instead of in rwx format?

What might folks suggest to get us moving again?  

All help is appreciated.  
-- Hugh