[Mailman-Developers] Split anonymous from harvester-proof (bug 940497)

[Pierre Abbat]

I'm on a list which a few weeks ago enabled the anonymous feature to prevent a 
spammer from lurking on the list and harvesting addresses. This made it 
impossible to sort messages by sender, and several members have complained 
about this. The list is not intended to be anonymous. I propose splitting 
this feature in two:
Anonymous: Anything that looks like an email address in the headers and is not 
a message-ID is replaced with the list address. The entire From: header is 
replaced with the list address. The incoming Received: headers are deleted 
(if the sender has a static IP, they identify him).
Harvester-proof: Anything that looks like an email address in the headers and 
is not a message-ID is replaced with the list address. The rest of the From: 
header (usually the sender's name) is left alone. The Received: headers are 
left in.

phma
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