Thus spake Barry Wainwright <[EMAIL PROTECTED]>, circa 12/6/2002 2:06 AM:
>> 1. The addition of a quoting character to any line beginning with "From ":
> This action is in line with one of the RFCs (I forget which one, and could
> look it up but I don't have the time right now).

I took the time and quoted the relevant RFC. Read the section on space
stuffing.

> Most SMTP servers identify the beginning of a message in an SMTP stream by
> looking for the word 'From' at the beginning of  a line. Not 'escaping' an
> additional line beginning with from would cause the message to be broken off
> at that point.

Perhaps you're thinking of MBOX storage, not SMTP? SMTP servers look for
"MAIL FROM:<reverse-path>" at the beginning of a transaction, and are
(supposed to be) careful to preserve the message's content unaltered. See
the section on transparency (4.5.2).

However, you are right that some servers will "From-munge" in-transit
messages (as RFC2646 puts it).


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