[Mailman-Users] mailman-owner bounces for postfix-style virtual domain

[mettius]

Hello,

I've got two domains working with Mailman, one regular, one 
Postfix-style Vritual.

Once per month when Mailman sends out its subscription reminders, each 
domain sends out its reminders.

that is mail seems to originate from:
 mailman-owner at real-domain.org
 and
 mailman-owner at virtual-domain.org

Users can reply to the mailman-owner at real-domain.org address, but 
attempts to reply to  mailman-owner at virtual-domain.org meet with this...

Apr  1 09:21:12 mercury postfix/smtpd[24031]: connect from 
web13906.mail.yahoo.com[216.136.175.69]
Apr  1 09:21:12 mercury postfix/smtpd[24031]: CEDD8133F: 
client=web13906.mail.yahoo.com[216.136.175.69]
Apr  1 09:21:12 mercury postfix/smtpd[24031]: CEDD8133F: reject: RCPT 
from web13906.mail.yahoo.com[216.136.175.69]: 554 
<mailman-owner at cactusairforce.org>: Relay access denied; 
from=<mettius at yahoo.com> to=<mailman-owner at cactusairforce.org> 
proto=SMTP helo=<web13906.mail.yahoo.com>
Apr  1 09:21:14 mercury postfix/smtpd[24031]: disconnect from 
web13906.mail.yahoo.com[216.136.175.69]

cactusairforce.org is the virtual domain.

taking a look at "/var/lib/mailman/data/virtual-mailman" shows entries 
for all four of the virtual domain's mailing lists, but there isn't an 
entry for the "mailman" mailing list (as there is in the 
"/var/lib/mailman/data/aliases")

Any ideas?

-Mettius