[Mailman-Developers] Excessive unsubscriptions

[Mark Sapiro]

Luke Hilton wrote:
>
>A mass mail (80k - html) was sent out to the 20,000 members approximately 2
>weeks ago.  All seemed to go fine.  I was alerted that the server
>performance had dropped dramatically so I checked the obvious and then
>bounced it.  The following day I received approx. 3000 unsubscribe notices.
>This is highly irregular as in the past only a few unsubscribe notices come
>in per month.  I checked these entries in the Membership list and they are
>still there, but the 'nomail' box is now checked and reason 'B' displayed. 

These are not unsubscribes. They are subscription disables due to
"bouncing". See your list's Bounce Processing page for settings that
control this process (normally, you don't want to disable someone on
the first bounce).

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