[Dshield] Vast increase in spam attempts

Jon R. Kibler Jon.Kibler at aset.com
Tue Jan 3 15:05:11 GMT 2006

David Cary Hart wrote:
> Same here. However, correct me if I'm wrong but almost all of this is coming
> from dynamic space. Wouldn't you be better off (in terms of cycles and
> bandwidth) by rejecting dynamic clients before RCPT TO?

Actually, most is coming from static cable modem of xDSL netblocks. About half from the US/Canada, one-third from Asia, and the rest from Europe and elsewhere.

Good point about rejecting dynamic addresses, but we already reject known DHCP blocks.

Jon R. Kibler
Chief Technical Officer
A.S.E.T., Inc.
Charleston, SC  USA
(843) 849-8214

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