[RFCI-Discuss] DSN listing of secureserver.net

[Alan Brown]

On Wed, 25 Oct 2006, Matus UHLAR - fantomas wrote:

> > HELO tests
> >
> > For an empty Return-Path as used in error messages and other
> > auto-replies SPF checks the HELO-identity. Actually it checks an
> > artificial postmaster at mail.example.org address for a HELO or EHLO
> > mail.example.org.
>
> Aha, this was the problem, I missed it too when set up SPF records...
> problem explained.

Yes, it addresses the issue of HELO forgery on spam emitted using null
sender envelope, however in the process it runs the risk of breaking
things in other ways.

AB