On Mon, 29 Nov 2004 administrator(_at_)yellowhead(_dot_)com wrote:
I was simply trying to reiterate how dangerous it is to use PTR records for
verifying email sources, and I apologize to those that might think it
off-topic.
It is not off-topic. And the PTR mechanism of SPF should be used only
as a last resort. I myself have had mail rejected by SPF because
the ISP screwed up their PTR records. (And it took 6 months to get
them to fix it.) As a result, I avoid using the PTR mechanism in SPF
if at all possible.
--
Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.