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From: Per Abrahamsen <abraham@dina.kvl.dk>
Newsgroups: gmane.emacs.gnus.general
Subject: Re: Mail without `From:' lines
Date: 06 May 1996 14:12:40 +0200
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I just tried to a message without a From: header by talking to
sendmail directly.  Sendmail automatically created a From: header,
using the envelope sender.  

Here is some extracts from the test (indentation added by me):

kleene% telnet smtp smtp
	mail from: amanda
	250 amanda... Sender ok
	rcpt to: abraham
	250 abraham... Recipient ok
	help data
	data
	354 Enter mail, end with "." on a line by itself
	test
	.
	250 NAA26313 Message accepted for delivery
	quit

kleene% cat /var/spool/mail/abraham 
	From amanda Mon May  6 13:58:56 1996
	Date: Mon, 6 May 1996 13:57:50 +0200
	From: amanda
	Message-Id: <199605061157.NAA26313@elc1.dina.kvl.dk>
	Apparently-To: abraham
	 
	test

kleene%