nanog mailing list archives
AOL rejecting mail from IP's w/o reverse DNS ?
From: "Christopher X. Candreva" <chris () westnet com>
Date: Wed, 3 Dec 2003 10:13:31 -0500 (EST)
Since I'm 99% sure the idea (or stupidity thereof :-) of blocking SMTP servers without reverse DNS came up here in this discussion, I just ran a manual queue run to clean out a queue, and saw this come up: ... Connecting to mailin-04.mx.aol.com. via esmtp...220-rly-xn05.mx.aol.com ESMTP mail_relay_in-xn5.9; Wed, 03 Dec 2003 09:59:55 -0500 220-America Online (AOL) and its affiliated companies do not 220- authorize the use of its proprietary computers and computer 220- networks to accept, transmit, or distribute unsolicited bulk 220- e-mail sent from the internet. Effective immediately: AOL 220- may no longer accept connections from IP addresses which 220 have no reverse-DNS (PTR record) assigned.
EHLO westnet.com
I don't know if this is new -- I don't recall seeing it before, but it doesn't say they WILL refuse, just they may. If they do start blocking -- this WILL be an operational issue. ========================================================== Chris Candreva -- chris () westnet com -- (914) 967-7816 WestNet Internet Services of Westchester http://www.westnet.com/
Current thread:
- AOL rejecting mail from IP's w/o reverse DNS ? Christopher X. Candreva (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Randy Bush (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Christopher X. Candreva (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Suresh Ramasubramanian (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Daniel Senie (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Robert E. Seastrom (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Randy Bush (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Christopher X. Candreva (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Christopher X. Candreva (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Matthew Crocker (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Steven M. Bellovin (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Adi Linden (Dec 03)
- Re: AOL rejecting mail from IP's w/o reverse DNS ? Randy Bush (Dec 03)