Which single header in an email item consistently informs the reader
(or software) that the item is from a mailing list, and lists the
address (and name) of that mailing list?  And in such a way that it
is clearly NOT mail from a *person*.
 
In the BITnet world the "Sender:" header was used for this purpose,
which doesn't seem to be correct in the Internet world...
 
BTW, I get confused by terminology like "mirrors", "exploders",
etc., so if you include such, an explanation would be greatly
appreciated (in plain English please?).
 
 
Regards, and thanks in advance.
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