[Mailman-Users] Problem Converting from Sendmail to PostFix (RH7.3)

[Dave Warchol]

Hello:
            I had a working test system using sendmail as the MTA.  I
wanted to try postfix as the MTA.  So, installed Postfix from package. 
Configured it, copied the mailman aliases over from the sendmail aliases
file, made the switch from sendmail using the MTA switcher.  Brought
sendmail down and postfix up.  I can send mail outbound (to the world)
and inbound from another unix box to a local user works fine.  When I
subscribe via the web to a list that I've created (called listmanagers),
I get the request for confirmation, however, I don't get subscribe
(either getting the welcome message or seeing the change in status
reflected in the subscribe log).  I do get the following e-mail back
(from Postfix):

=================================================
This is the Postfix program at host hclxtstest01.hh.chs.

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the message returned below.

			The Postfix program

<listmanagers-request at hclxtstest01.hh.chs>: Command died with status
2:
    "/home/mailman/mail/wrapper mailcmd listmanagers". Command output:
Failure
    to exec script. WANTED gid 12, GOT gid 99.  (Reconfigure to take
99?)

==================================================

I also see the following entry in maillog:

Sep 19 15:41:59 hclxtstest01 postfix/smtpd[3514]: connect from
hcnwgwds01.hh.chs[10.16.10.21]
Sep 19 15:41:59 hclxtstest01 postfix/smtpd[3514]: E16EF11EE4:
client=hcnwgwds01.hh.chs[10.16.10.21]
Sep 19 15:41:59 hclxtstest01 postfix/cleanup[3515]: E16EF11EE4:
message-id=<sd89dbb5.039 at gwmail.harthosp.org>
Sep 19 15:41:59 hclxtstest01 postfix/smtpd[3514]: disconnect from
hcnwgwds01.hh.chs[10.16.10.21]
Sep 19 15:41:59 hclxtstest01 postfix/nqmgr[3326]: E16EF11EE4:
from=<Warchol at harthosp.org>, size=1627, nrcpt=1 (queue active)
Sep 19 15:41:59 hclxtstest01 Mailman mail-wrapper: Failure to exec
script. WANTED gid 12, GOT gid 99.  (Reconfigure to take 99?) 
Sep 19 15:42:00 hclxtstest01 postfix/local[3517]: E16EF11EE4:
to=<listmanagers-request at hclxtstest01.hh.chs>, relay=local, delay=0,
status=bounced (Command died with status 2: "/home/mailman/mail/wrapper
mailcmd listmanagers". Command output: Failure to exec script. WANTED
gid 12, GOT gid 99.  (Reconfigure to take 99?) )
Sep 19 15:42:00 hclxtstest01 postfix/cleanup[3515]: 0837111EE6:
message-id=<20020919194200.0837111EE6 at hclxtstest01.hh.chs>
Sep 19 15:42:00 hclxtstest01 postfix/nqmgr[3326]: 0837111EE6: from=<>,
size=3572, nrcpt=1 (queue active)
Sep 19 15:42:00 hclxtstest01 postfix/smtp[3520]: 0837111EE6:
to=<Warchol at harthosp.org>,
relay=hhnetra-gw.harthosp.org[204.164.196.250], delay=0, status=sent
(250 Ok)


Any help is appreciated.

Thanks much,
Dave