At 01:01 PM 1/30/00 John Burgess wrote:
I believe the problem to be that although www.autobots.net resolves to 198.92.128.204, a lookup on that ip address does not seem to resolve. There does not seem to be a ptr record to the hostname for that ip address. Some (most these days) smtp gateways are configured only to accept email from those hosts who can be verified that the ip address resolved from a name lookup resolves back to the same name when a reverse lookup is done.
Nope. That'd be a pretty secure stance and would keep a large amount of valid email from getting through, including lots of email from Major ISPs dialup accounts. What many (not yet most) MTAs do is verify that the IP address resolves at all. That means there's at least a point of accountability.
(Check the headers on this post; you'll see I resolve, but NOT to my return address.)
Jeff -- Jeff Lasman, nobaloney.net <jblists@xxxxxxxxxxxxx> <www.nobaloney.net>, <www.mailtraqna.com>, <www.email-lists.com>