[Mailman-Users] mailman screens by subscriber list before checking sender filter

Being held by which list? I am unable to understand from the above and
subject what is occurring.

If you are saying that a sub-list member is in the Umbrella list's
accept_these_nonmembers, and the post is being held by the Umbrella
list, what is the reason it is held. If post by nonmember, I don't
know why this would be.

If it is being held by another sub-list of which the poster is not a
member, this is normal. If posts to the sublists from the umbrella are
to be accepted without being held as non-member posts, the
UMBRELLA-bounces at ... address should be a member of each sublist with
delivery and password reminders disabled.

If this doesn't help, please try to be more specific about exactly what
is happening.

OK. Now I understand your Subject:, and yes that's the way Mailman
works. It first determines if the post is from a member, and if so, if
the member is moderated. It does the *_these_nonmember filters and
generic_nonmember_action only after determining that the post is not
from a member.

Also, in this case, even if the UMBRELLA-bounces address were a member,
the post would still be held, at least with the Defaults.py setting of
SENDER_HEADERS, because it would check the From: header first and stop
when the from was found to be a member.

The real question is why is this poster moderated on the sub-list? If
the intent is that her posts to the umbrella be distributed to all
sub-lists without being held, why hold her post if she posts only to
one sub-list?

OK. I "get it".

Here's what you could do. It's not "spoof proof", but it will
accomplish what you want I think.

Instead of putting the UMBRELLA-bounces address in
accept_these_nonmembers of the sub-lists, make that address a member
with delivery and password reminders off and unmoderated.

Then put

SENDER_HEADERS = (None, 'from', 'reply-to', 'sender')

in mm_cfg.py and restart Mailman. This will check the envelope sender
before From: when testing for a member post. You could instead put

SENDER_HEADERS = ('sender', 'from', None, 'reply-to')

to check Sender: before From:. Since both Sender: and the envelope
sender (indicated by the None entry) are the UMBRELLA-bounces address
in posts from the umbrella, they will be accepted by the sub-lists
with this set up, even if From: is a nonmember or moderated member.