[Mailman-Users] relay access denied

Users attempting to subscribe to my list have not been added lately and looking in my /var/log mail.log file I find the following.

Recipient address rejected: Relay acce ss denied; from=<chemclub-bounces@atom.chem.iupui.edu> to=<kforsyth@iupui.edu> p roto=ESMTP helo=<atom.chem.iupui.edu>

I'm using postfix as the main mail on the server and have pop-before-smtp configured to allow for relaying so I'm puzzled. Any suggestions?

Thanks,

Kelsey

Kelsey Forsythe, PhD Director, Computational Molecular Science Facility IUPUI Chemistry LD 320 402 North Blackford St. Indianapolis, IN 46202 Ph: 317-278-2202 Fax: 317-274-4701