[comp.mail.misc] Different mail header format?

berg@marvin.e17.physik.tu-muenchen.de (Stephen R. van den Berg) (03/13/91)

Could it be that some mailers (notably in the UK) strip the
"From " line, or don't add a "From " line?

And if so, could it be that they use some other method to authenticate the
mail, like:

From: Real Name <Authenticated_user_name>

instead of the usual:

From Authenticated_user_name Date

And what happens if sendmail receives a message without a "From " line.
Does it append one itself?  What username and date does it use?
And if sendmail doesn't add any "From " line, what does /bin/mail
(the normal mail delivery program) do with it?  Does it append the
"From " line?  What username and date does it use?
Does it parse the <...>?

Inquiring minds want to know.  Thanks.
--
Sincerely,                 berg@marvin.e17.physik.tu-muenchen.de
           Stephen R. van den Berg.
"I code it in 5 min, optimize it in 90 min, because it's so well optimized:
it runs in only 5 min.  Actually, most of the time I optimize programs."