[Mailman-Users] Posting OK but getting not allowed to post message

[john at giosico.com]

I am using mailman 2.1.2 and everything seems to be working ok except that when 
a user makes a post they get a message back saying ...

You are not allowed to post to this mailing list, and your message has
been automatically rejected.  If you think that your messages are
being rejected in error, contact the mailing list owner at

I have tried deleting and recreating the list but I still get the message.  
Creating a new list with a different name does not have this problem.

Text searches have been done to find residual info after a list has been 
deleted has resulted with no luck.

Its weird that creating a new list with a new name does not have the error but 
deleting an old list and recreating it does.

Any help or guidance is much appreciated.