Subject: Re: How can you block empty email address at sendmail?
To: John Maier <>
From: Manuel Bouyer <>
List: netbsd-users
Date: 01/08/2001 19:10:54
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:
> 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.