Ronald F Guilmette <rfg@monkeys.com> writes:
> If you try to differentiate mail message into two piles, just based on
> whtehre the envelope sender was null or not, then in one pile... the
> null envelope sender pile... you will have a lot of bounce messages, but
> also a fair amount of spam, and also quite a few auto-responses from
> badly implemented autoresponders.
And all replies from one particularly piece of list management software
whose authors have their own very... idiosyncratic interpretations of the
mail RFCs.
--
Russ Allbery (rra@stanford.edu) <http://www.eyrie.org/~eagle/>
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