[Zope] mailboxer+zope security question

[mrmikeylee at comcast.net]

I have a setup with two maillists on my Zope 2.7 setup and Mailboxer.  One mailist is a straightforward, open-ended list that anyone can join; it's working w/out any problems.  I'm trying to make the second list a secure one, where only specific users can join, receive e-mails from the list, and view the archives at the given site.  I created a role for my "promoters" group, attached specific users to it, and then w/in zope, only limited "View" access to the maillist to this group.  It works in that users authenticated against "promoters" can visit the site, but I can't send emails to the list:

Apr  5 15:14:11 promoters mailboxer: problem occurred uploading email to server http://testme.org:8080/promoters/promoters/manage_mailboxer (HTTP Error 302: Moved Temporarily)
Apr  5 15:14:11 testme postfix/local[6922]: 5C8E922834D: to=<openib-promoters at testme.org>, relay=local, delay=0, status=deferred (temporary failure)

This is the entry from my aliases file:

openib-promoters: "|/etc/postfix/smtp2zope.py http://testme.org:8080/promoters/promoters/manage_mailboxer 20000"

Any suggestions...something I missed?  Thanks

Michael