nanog mailing list archives
Re: AOL rejecting mail from IP's w/o reverse DNS ?
From: Suresh Ramasubramanian <suresh () outblaze com>
Date: Thu, 04 Dec 2003 15:00:48 -0500
Chris Lewis writes on 12/4/2003 2:24 PM:
As I understand it, they blacklist if an IP with no rDNS generates "some threshold of" complaints. Not just "no rDNS" by itself.
That is a good way to go.
A simple "no rDNS" rule causes too much trouble with our overseas customers. I'm sure AOL discarded that idea for the same reason.
Yup. The model can be extended to "if no rDNS, and if spamtrap hits or other spammish behavior noted from more than X IPs per /24, then block the /24".
srs -- srs (postmaster|suresh)@outblaze.com // gpg : EDEDEFB9 manager, outblaze.com security and antispam operations
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 ? 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)