[Mimedefang] Justifying greylisting to management

Matthew S. Cramer mscramer at armstrong.com
Fri Mar 3 17:09:15 EST 2006

On Sun, Feb 26, 2006 at 10:48:52AM -0500, David F. Skoll wrote:

> > However, I've also been surprised somewhat that spammers haven't reacted
> > to greylisting still.  I thought the technique would be invalid by now
> > because the minute ratware/malware starts properly following the 4xx
> > rules, the technique is from my understanding, null and avoid.
> To react properly to greylisting means staying "pinned" to the same IP
> for a long(er) period of time, making it more likely that the IP
> address will appear in a DNS-based RBL.

*AND* it means more time spent sending the same spam to get a profit,
 hopefully making spamming less profitable...


Matthew S. Cramer <mscramer at armstrong.com>          Office: 717-396-5032
Project Manager, Planning and Service Management    Fax:    717-396-5590
Armstrong World Industries, Inc.                    Cell:   717-917-7099

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