>> > I had the same issue and found that the system that's relaying >> > (216.129.105.40) those confirmation emails doesn't have a PTR record. >> > You'd think someone selling a antispam/email appliance would be familiar >> > with the RFCs. >> > >> That would explain why I got no confirmation, we do not accept email >> from IP's without a PTR record. >> >> I agree, if true this looks pretty bad for a so called antispam >> company. > > In fairness -- if you drop mail with no rDNS, you are dropping 3.6% of > legit email in general, going by the test results for our RDNS_NONE > rule... ;)
Everyone should block/defer ALL email with no reverse DNS. Then maybe those email admins would get a clue. Matt
