nanog mailing list archives
Re: AOL rejecting mail from IP's w/o reverse DNS ?
From: "Chris Lewis" <clewis () nortelnetworks com>
Date: Thu, 04 Dec 2003 14:24:28 -0500
Suresh Ramasubramanian wrote:
They have had this policy since several months now but it is still a "may" - and does give them a good excuse to take out large IP blocks that don't have proper reverse DNS assigned and emit a lot of spam.
As I understand it, they blacklist if an IP with no rDNS generates "some threshold of" complaints. Not just "no rDNS" by itself.
We're doing something like that ourselves now.Covers about 25% of all of our spam with a .025% "would be blocked if we didn't whitelist" rate. Which is quite good.
A simple "no rDNS" rule causes too much trouble with our overseas customers. I'm sure AOL discarded that idea for the same reason.
Current thread:
- Re: AOL rejecting mail from IP's w/o reverse DNS ?, (continued)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Adam McKenna (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Adam McKenna (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Crist Clark (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Adam McKenna (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Crist Clark (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Adam McKenna (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Adam Kujawski (Dec 06)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Christopher X. Candreva (Dec 06)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Adam McKenna (Dec 07)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Chris Lewis (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Suresh Ramasubramanian (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Petri Helenius (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Suresh Ramasubramanian (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Petri Helenius (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? just me (Dec 04)
- RE: AOL rejecting mail from IP's w/o reverse DNS ? Tony Hain (Dec 04)
- RE: AOL rejecting mail from IP's w/o reverse DNS ? Sean Donelan (Dec 04)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Petri Helenius (Dec 07)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? just me (Dec 07)