bogofilter -M drops "From "

[michael at optusnet.com.au]

David Relson <relson at osagesoftware.com> writes:
[...] 
> With 0.15.0, there was a significant reorganization of the input code to
> better support handling of mbox files and maildir and MH directories. 
> Since the "From " line is added locally to a message, its fields
> duplicate other header fields.  Thus, scoring its tokens is a
> duplication.

No, this is bad. The 'From ' header is indeed added locally, but it's
the often the only place that the envelope sender is recorded.

It _may_ duplicate other fields, but it's not guarenteed to
do so.


# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 optusnet.com.au ESMTP Sendmail 8.12.8/8.12.8; Tue, 16 Sep 2003 15:46:26 +1000
helo fred
250 optusnet.com.au Hello localhost.localdomain [127.0.0.1], pleased to meet you
mail from: <santa at yahoo.com>
250 2.1.0 <santa at yahoo.com>... Sender ok
rcpt to: michael at optusnet.com.au
250 2.1.5 michael at optusnet.com.au... Recipient ok
data
354 Enter mail, end with "." on a line by itself
To: fred
From: fred
Subject: hello!
 
test
.
250 2.0.0 h8G5kQNr004031 Message accepted for delivery
quit
221 2.0.0 optusnet.com.au closing connection
Connection closed by foreign host.


And then the message that's actually delivered is:

>From santa at yahoo.com  Tue Sep 16 15:47:17 2003
Received: from fred (localhost.localdomain [127.0.0.1])
        by optusnet.com.au (8.12.8/8.12.8) with SMTP id h8G5kQNr004031
        for michael at optusnet.com.au; Tue, 16 Sep 2003 15:47:04 +1000
Date: Tue, 16 Sep 2003 15:46:26 +1000
Message-Id: <200309160547.h8G5kQNr004031 at optusnet.com.au>
To: fred at optusnet.com.au
From: fred at optusnet.com.au
Subject: hello!
 
test
 


Note that the 'From ' line doesn't match anything from the other
headers...

Michael.