[120320] in North American Network Operators' Group
Re: Arrogant RBL list maintainers
daemon@ATHENA.MIT.EDU (Jack Bates)
Wed Dec 16 10:35:34 2009
Date: Wed, 16 Dec 2009 09:32:37 -0600
From: Jack Bates <jbates@brightok.net>
To: Valdis.Kletnieks@vt.edu
In-Reply-To: <813.1260969676@localhost>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Valdis.Kletnieks@vt.edu wrote:
> When the hostname at that IP address is exactly one incremented character
> different than the preceding address, and one decremented character different
> than the following address, and that pattern holds across a /24, they're
> probably not mail servers. Nobody has 256 'frzzmabs-1'..'frzzzmabs-256'
> servers in the same /24 for *anything* user-facing.
Mental note, don't setup 253 generic servers in the same /24 for dynamic
allocation and usage by the load balancers and proxy servers.
Check.
Jack
