[Mailman-Users] Creating a new list - "Bug in Mailman version 2.1.15"

[Kevin Nowaczyk]

The original permissions were like this:
drwxrwsr-x 2 root     list  4096 Feb 22 12:45 .
drwxrwsr-x 8 root     list  4096 Feb 13  2014 ..
-rw-rw---- 1 root     list  2928 Feb 22 12:45 aliases
-rw-r----- 1 root     list 12288 Jan 29 18:55 aliases.db
-rw-r----- 1 root     list    41 Feb 22 12:44 creator.pw
-rw-rw-r-- 1 root     list    10 Feb 13  2014 last_mailman_version
-rw-r--r-- 1 root     list 14100 Jun 16  2012 sitelist.cfg
-rw-rw---- 1 www-data list  2006 Feb 22 12:45 virtual-mailman
-rw-r----- 1 root     list 12288 Jan 29 18:55 virtual-mailman.db

I ran `chmod 660 aliases.db virtual-mailman.db` so they are now both "-rw-rw----".
I sent a message to the newly created list and received a bounce reply:
---------------------------------------------------------------------------------------------------------
This is the mail system at host server.myDomain.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

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 attached returned message.

                   The mail system

<newlist at myOtherDomain.com> (expanded from
    <newlist at lists.myDomain.com>): unknown user: "newlist"
Final-Recipient: rfc822; newlist at myOtherDomain.com
Original-Recipient: rfc822;newlist at lists.myDomain.com
Action: failed
Status: 5.1.1
Diagnostic-Code: X-Postfix; unknown user: "newlist"
----------------------------------------------------------------------------------------------------------
So something is still amiss. Any ideas?
Thanks,
Kevin