Re: How to block usurpated address return path ?

On Mon, Jun 28, 2004 at 07:01:04PM +0200, Didier Lebrun wrote:
> Yes, it meets what I observed. I just wondered if someone had a miracle 
> trick I didn't think of ;-)

Another thing you can do is publish spf in your DNS TXT record.  It
won't help much, considering that not many people use it, but if anyone
does they will find that the mail "from you" is not really from you.

  http://spf.pobox.com/

There's lots of debate about spf, so read up on it first.