Most of the time it fills in the postmaster or euid of the smtpd daemon
or "undisclosed recipients' @ the hostname of the mail server receiving
the mail (Dj in sendmail)
Its also (not pointing fingers) an old spammer trick to obfuscate the
originator.
Thats when you get stuff like From: [EMAIL PROTECTED]
It took me a few days to figure out a way to make sendmail bounce those.
-mark
On Thu, 28 Jun 2001, Ken Joy wrote:
> I can explain that...I left the FROM: field blank because I sent the thing
> out before having a coffee...and eveyone's mail reader seems to be plunking
> in whatever it likes (I'm sure there's some defacto thing that mail clients
> do with messages with no from address.....but I'm also sure I don't know
> what it is).
>
> Sorry about that everyone....
>
> Ken
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Craig Bernstein
> > Sent: June 27, 2001 7:20 PM
> > To: [EMAIL PROTECTED]
> > Subject: Reseller Update SuperSpam?
> >
> >
> > Can someone explain how and why that last reseller update regarding the
> > fax machine went to one of my clients? Headers were as follows...
> >
> > Received: from localhost (popensrs@localhost)
> > by n4.opensrs.net (8.9.3/8.9.3) with SMTP id MAA08749;
> > Wed, 27 Jun 2001 12:54:03 -0400
> > Date: Wed, 27 Jun 2001 12:54:03 -0400
> > Received: by n4.opensrs.net (bulk_mailer v1.12); Wed,
> > 27 Jun 2001 09:55:57 -0400
> > Subject: Subject: OpenSRS Live Reseller Update 06/27/01
> > Message-ID: <[EMAIL PROTECTED]>
> > From: MAILER-DAEMON
> > To: undisclosed-recipients:;
> >
> >
> > I will provide the recipients's email address to OpenSRS support upon
> > request.
> >
> > EXTREMELY unprofessional...
> >
> > --
> > ...Craig
> >
>
--
mark jeftovic
http://www.easydns.com
http://mark.jeftovic.net
