[CentOS] dealing with spoofing

On Wed, Aug 31, 2011 at 04:27:00PM -0400, m.roth at 5-cent.us wrote:
> Stephen Harris wrote:
> > Anyway, the SMTP server should send the delivery failure to the envelope
> > address, which may be different to both the From and Reply-To addresses.
> >
> That would be lovely. Unfortunately, a high percentage seem to use the
> Reply-To address. Trust me, the last four or five months, I've gotten
> probably hundreds, if not more, of delivery failures. And I wind up at
> least glancing at them, in case email to this list, or to a friend, has
> bounced.

Envelopes can be forged just as easily as any header.

-- 

rgds
Stephen