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Re: spurious "from" - whose bug is it?

1997-06-13 00:25:00
On Fri, 13 Jun 1997 00:19:30 -0500,
"Cloyce D. Spradling" <cloyce(_at_)austin(_dot_)ibm(_dot_)com> wrote:
On Thu, Jun 12, 1997 at 08:57:46PM -0700, William J. Evans; mail protected 
by spamgard{tm} wrote:
: wwgrol(_at_)sparc01(_dot_)fw(_dot_)hac(_dot_)com (W. Wesley Groleau x4923) 
wrote:
: :>From appearances, they have a WIDE range of IP addresses in their DNS - I
: :suspect they register iki subdomains for members, and set up MX for those
: :users (was this mentioned?) - if you spoke nicely with your CURRENT mail
: That's not a message header at all.  A message header begins with
: "From ", not ">From ".  In fact, that > was placed there precisely to
: prevent that line from being recognized as the beginning of a header.
Actually, I'd imagine that one of the MTAs between him and the list put
that in.  So it probably was a message header.
Watch; I'll put 'From '... at the beginning of the following line, and it'll
come out as '>From '...
From what I can tell, you will see this line munged up.  It shouldn't cause
any problems.

*From* what I've seen while following the problems of the guy whose
Procmail digest would split always when the digest contained an
unquoted From_ line (hi Lance, how you going? :-), I am now under the
impression that this is not frequently done on outgoing mail. Instead,
it would seem that most sites (including my own) escape the From_
lines in the delivery phase. 
  When I sent Lance a message with a bare From_ line and BCC:ed
myself, the BCC had the >From but the message Lance got didn't.
Similar experiments elsewhere seem to verify this hypothesis.

FWIW, some more information about this is in the Fetchmail FAQ. 
(I now have an URL to that on the Procmail links page I'm so fond of
plugging. Here: <http://www.iki.fi/~era/procmail/links.html> ... I did
it again!)

/* era */

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