[130162] in North American Network Operators' Group
Re: AS11296 -- Hijacked?
daemon@ATHENA.MIT.EDU (Andrew Kirch)
Wed Sep 29 13:10:28 2010
Date: Wed, 29 Sep 2010 13:10:08 -0400
From: Andrew Kirch <trelane@trelane.net>
To: nanog@nanog.org
In-Reply-To: <20100929122647.C26503@egps.ziskind.us>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 9/29/2010 12:26 PM, N. Yaakov Ziskind wrote:
> "I block all SMTP traffic from IPV4 servers (clients?) which have odd
> numbers in the third octet." might not be a good idea for a high volume
> mail server with clients, but if it's your network, go for it.
>
Sadly this method would on average block 97% spam, 3% ham, and
statistically be highly effective.
