[Mailman-Users] does mailman ever automatically delete an expired email address?

2011-03-10 Thread Jane Frizzell

Hello
Does mailman ever delete members from lists automatically for any 
reason? One of the owners of one of our lists (only 1 list seems to have 
been affected) recently reported that he had lost 100 users from his 
list. They were removed, not just marked as nomail. A primary look at 
some of the names lost. show that the addresses were no longer valid 
email addresses. The addresses would have expired about 6-8 months ago. 
The message he got as he was the owner, one message per address was:


- Forwarded message from mailman-boun...@lists.bates.edu -
   Date: Wed, 09 Mar 2011 09:00:05 -0500
   From: mailman-boun...@lists.bates.edu
Reply-To: mailman-boun...@lists.bates.edu
Subject: batesbuild unsubscribe notification
 To: batesbuild-ow...@lists.bates.edu

usern...@bates.edu has been removed from batesbuild.

Thank you.  Jane


--
Jane Frizzell   Network Services Administrator
Bates College Information and Library Services
jfriz...@bates.edu  786-6457110 Russell St

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Re: [Mailman-Users] does mailman ever automatically delete an expired email address?

2011-03-10 Thread Larry Stone

On Thu, 10 Mar 2011, Jane Frizzell wrote:


Hello
Does mailman ever delete members from lists automatically for any reason? One 
of the owners of one of our lists (only 1 list seems to have been affected) 
recently reported that he had lost 100 users from his list. They were 
removed, not just marked as nomail. A primary look at some of the names lost. 
show that the addresses were no longer valid email addresses.


Yes, Mailman's bounce processing will do so. The specifics as to how 
many bounces and how long to wait before removing the user can be set by 
the list administrator. I believe bounce processing is on by default.


This is, in general, a good thing as excessive sending to dead addresses 
is a good way to get yourself on some of the anti-spam blacklists.



-- Larry Stone
   lston...@stonejongleux.com
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