[Mailman-Users] list address in From: line post message to closed list

Steve Lindemann steve at marmot.org
Thu Apr 3 21:18:17 CEST 2008

I'm sorry, I'm just not sure what the best subject line would be for 
this... 8^(    I'm sure this has been going on for ages, but it's only 
just recently been brought to my attention.

The problem - when the list email address is (spoofed) in the From: line 
(as well as being on the To: line) the message posts to the list.  The 
ability to post to the list is supposed to be restricted to only list 
members.  The list address is not in the list of list members.

Is this normal?  I checked the config and there did see anything to 
allow this behavior there.  Is the list email address automatically 
considered to be a member of the list?  I can always block it in 
"privacy options->sender filters", but should that even be necessary?  Help!

I checked what documentation I can find and couldn't find any mention of 
this behaviour.  I didn't have a clue how to look for it in the FAQ so I 
settled for reading the index and didn't see anything resembling this 
there either.
Steve Lindemann                         __
Network Administrator                  //\\  ASCII Ribbon Campaign
Marmot Library Network, Inc.           \\//  against HTML/RTF email,
   url: http://www.marmot.org           //\\  vCards & M$ attachments
email: mailto:steve at marmot.org
voice: +1.970.242.3331 ext 116
   fax: +1.970.245.7854

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