I am getting this error whenever a user on the list sends mail to the list:

----- The following addresses had permanent fatal errors -----
280-directors-list
(reason: 550 5.1.1 <280-directors-list@xxx.xxx.xxx> (280-directors-list@bqcolo.dyndns.org)... User unknown)
(expanded from: 280-directors-list)
nobody
(reason: 550 5.1.1 <nobody@ (nobody@bqcolo.dyndns.org)xxx.xxx.xxx (280-directors-list@bqcolo.dyndns.org)> (nobody@bqcolo.dyndns.org)... User unknown)
(expanded from: nobody)
It used to work then suddenly quit. Any ideas or troubleshooting tips?

This is on a NuOnce BlueQuartz box.

Thanks!

I have been told that the mailing lists do not work on the nuonce system. (looks like a sendmail issue)