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

Mark Sapiro mark at msapiro.net
Thu Mar 10 18:01:55 CET 2011

Jane Frizzell wrote:

>Does mailman ever delete members from lists automatically for any 

Automated bounce processing will do this.

>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.

This could be due to normal bounce processing. They may have been
removed after exhausting notices or immediately upon reaching the
threshold score depending on the list's Bounce processing settings.

Check Mailman's 'bounce' log for more detail on what was done and why.

Also, prior to Mailman 2.1.10 there was a bug in cron/disabled that
could cause list members with stale bounce information to be
disabled/removed if the list's bounce_score_threshold value was

>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 show that the addresses were no longer valid 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-bounces at lists.bates.edu -----
>    Date: Wed, 09 Mar 2011 09:00:05 -0500
>    From: mailman-bounces at lists.bates.edu
>Reply-To: mailman-bounces at lists.bates.edu
> Subject: batesbuild unsubscribe notification
>      To: batesbuild-owner at lists.bates.edu
>username at bates.edu has been removed from batesbuild.

That's the generic unsubscribe owner notification. It is consistent
with removal by bounce processing.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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