[Mailman-Users] Getting Spam from Banned Address

[Henry Hartley]

I have a list that started getting a lot of spam from a particular 
address. Most of them get sent to moderation because of "Too many 
recipients" and they are easily dealt with.

The address in question was an alternate address for one member and 
after speaking with him, we decided it would be OK to take the address 
off the list completely. I have done so but continue to receive spam 
from that address. The list has generic_nonmember_action set to discard 
but the messages continue to come in, although they still mostly go to 
moderation rather than the list. But I don't see how they are getting 
there. I tried adding the address to discard_these_nonmembers but that, 
too, seems to have no effect.

Looking at the header of one of the message, however, and I see that 
although they show up as From that single banned address, there are 
multiple addresses in the From field. At least one other of the 
addresses is a valid list address. I assume that as long as at least one 
 From address is valid, mailman will let it through the gate. Is that 
right? Should there be some setting to only let in mail with a single 
 From address? I can't see any reason to allow multiple From values. Or 
possibly a setting that says "all From addresses must be on the list".

Or am I missing something?

-- 
Henry