[Mailman-Users] Bounce messages
msapiro at value.net
Sat Oct 29 01:58:31 CEST 2005
Ashley M. Kirchner wrote:
> We'd like to set one of our lists up so that permanent/fatal errors
>(such as invalid mailbox, unknown user, unknown host) would immediately
>get unsubscribed, while temp fails (such as mailbox full, try again
>later, etc.) will simply go through the normal motions.
> With that, we have a few questions:
> a) Does mailman discern between a temp fail and a permanent fail on
>a subscriber's address? Obviously this would be the way to figure out
>who gets unsubscribed right away and who doesn't.
Yes, but not really well. "Hard" bounces increment the score by 1.0
while "soft" bounces increment the score by 0.5
> b) How do we configure mailman to do this immediate unsub of the
> b) in logs/bounce, I see various different bounce scores. Can
>anyone tell me what those numbers actually mean?
> Jul 16 23:14:54 2005 (1835) user at domain.net: list current bounce
> Jul 17 05:10:59 2005 (1835) user at domain.com: list current bounce
> Jul 22 10:21:11 2005 (1835) user at domain.org: list current bounce
> Jul 27 12:00:49 2005 (1868) user at domain.gov: list current bounce
> Aug 17 06:17:18 2005 (1868) user at domain.edu list current bounce
It is a report of that user's current bounce score. Read the material
on the Bounce processing page in the list's admin interface.
For configuration try the following bounce processing settings:
bounce_score_threshold 1.0 i.e. the first hard bounce hits the
threshold, but it takes soft bounces on two days.
bounce_info_stale_after 0 but see below. This is the part that may not
work well for soft bounces.
These settings will cause a member who hard bounces to be unsubscribed
immediately (or sent a probe which will cause the unsubscribe if it
The problem is with soft bounces. If you set bounce_info_stale_after to
1 or more, then anyone with soft bounces on two consecutive days (or
any two days with less than bounce_info_stale_after days in between)
will be immediatly unsubscribed. This seems a little harsh. OTOH, if
you set bounce_info_stale_after to 0, soft bounces will never
disable/unsubscribe a member because only one bounce is scored per day
and yesterday's bounce is always stale. This seems a little lenient,
but may in fact be OK
Mark Sapiro <msapiro at value.net> The highway is for gamblers,
San Francisco Bay Area, California better use your sense - B. Dylan
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