Subject: Re: operator message
From: [email-masked] (Shankar Unni)

5 Feb 1997 13:24:23 -0800
Approved: [email-masked]
Distribution: cygnus
Message-ID: <[email-masked]>
References: <[email-masked]>
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Original-CC: Grant Leslie <[email-masked]>, GNU-WIN32 <[email-masked]>
Original-Sender: [email-masked]

do i care? wrote:

> actually this is a result of a fake email, apprently to means, pine knew
> that the message was fake, notice the sender address is from brazil, while
> it shows that he's the operator of cygnus...

Geez, it's nothing that fancy, folks. operator@wherever seems to have
simply done

 /usr/lib/sendmail [email-masked] 

with an empty body fed into stdin. Sendmail will stick in an
Apparently-To: synthesized from the recipients on the command line if
there's no "To:" line in the message (which there obviously isn't: he
seems to have fed an empty file to sendmail). The other headers are all
synthesized by sendmail in its normal course of operation..

The "To: " header is not guaranteed to exist..
-- 
Shankar Unni                                  [email-masked]
Chromatic Research                            (408) 752-9488
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