Ah!  The explains why sendmail translates a blank email address to
MAIL-DAEMON

Well, the ability to block most spam is better than nothing.

Thanks for the info!

jam

----- Original Message -----
From: "Manuel Bouyer" <bouyer@antioche.lip6.fr>
To: "John Maier" <jmaier@midamerica.net>
Cc: <netbsd-users@netbsd.org>
Sent: Monday, January 08, 2001 12:10 PM
Subject: Re: How can you block empty email address at sendmail?


> On Mon, Jan 08, 2001 at 11:35:21AM -0600, John Maier wrote:
> > I have been locking down my email and I seem to have one last spam hole.
> > The spammers send:
> > MAIL FROM:<>
> >
> > and the sendmail thinks the mail is from postmaster.
> >
> > So how do I create a rule to tell sendmail to disallow blank 'from'
emails?
>
> If you disable this, you'll also block error messages comming back from
other
> sendmails, I think.
>
> --
> Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
> --
>