I have often wondered about the inefficiencies of having every list arrive at member removal via independent bounce processing. I think there is value in removal of a bounced member from ALL lists.

This seems particularly useful where we have adapted the script from the Pasus mailing lists site to have an all-campus list where membership is automatic for everyone who is on any of our seven campuses. We are on version 2.1.9, so sibling lists are not a available feature, and I wanted to reduce duplicate mailings. I am still unsure whether Mailman will eventually get unhappy with members popping up the next day after they have been added back from a campus list that has not yet completed bounce processing for that member.

The same concern applies for captive lists where the membership is generated nightly from employees' roles in our administrative software database. In that case there is no possibility of a subsidiary list removing a member through bounce processing, and the roles may persist for a long time after an account is abandoned and goes over quota. Sibling lists naturally would not be applicable in that situation.

As a side question, is there some place in Mailman that keeps track of list members that have been removed by bounce processing in case they reappear immediately and still bounce?

At 10:54 AM 9/26/2009, Mark Sapiro wrote:
(--  snip   --)

So the issue is, is it worth enhancing bounce processing so that when a
bounce is returned for a non-member of list X, we look at list X's
regular_include_lists and score the bounce for any of those lists of
which the bouncing address is a member?

Thoughts anyone?

It seems that in the situation above where there are (I think) two
active lists that get their own posts, there would be enough regular
bounces so that ignoring the additional bounces from the all list
wouldn't be a problem, but there may be other situations where a list
is used as an alternative umbrella where almost all the posts would be
to the 'umbrella' and this would be a problem.

I added a note about this to the FAQ at <http://wiki.list.org/x/TIA9>.

--
Mark Sapiro <[email protected]>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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