[Mailman-Users] Subject line message filtering

[Chris Nulk]

Hello all,

I am trying to stop a particular group of messages from going to several 
of my lists.  I am looking at the Subject line of the message to do the 
filtering and I am using the header_filter_rules in Spam Filtering.  My 
regex filter is:

      ^Subject:[\s\+]*\[.*\]\s+(Invitation|Canceled Event):.*

and the Subject lines I am trying to catch and reject the message look like:

      Subject: [MYLIST] Invitation: Test event @ Thu Feb 28,
	     2013 10:00 - 11:00 (mylistg at example.com)

or

      Subject: [MYLIST] Canceled Event: Test event @ Thu Feb 28,
	     2013 10:00 - 11:00 (mylist at example.com)


I have set the action for the rule to reject, however, the messages still get posted to the list.

I have tested the regex above using the python interactive interpreter and the regex does match the various inputs used.

Can anyone tell me what the problem is with my regex?

Also, can any of the sender/recipient filters cause the message to bypass the spam filters?  The message pipeline is unchanged.

Thanks,
Chris