On Sat, 18 Sep 2004, Claus Färber wrote:
Please note that you can't put two addresses in the From field either,
in case that the message has been jointly written by two authors (e.g.
"jdoe(_at_)example(_dot_)com" and "jane(_at_)example(_dot_)org").
Putting two addresses in the From field is exactly what you should do
for a message with two authors. RFC 822 section A.2.7 has an example
with multiple addresses in the From field, and RFC 2822 section 3.6.2 is
clear that the From field contains a mailbox-list.
--apb (Alan Barrett)