Stealth Blocking

Shawn McMahon smcmahon at
Thu May 24 20:09:21 UTC 2001

On Thu, May 24, 2001 at 09:46:19AM -0700, Eric A. Hall wrote:
> TCP rate-limiting on outbound traffic to *:25 would also be extremely
> effective, particularly on unclassified customer traffic, and without the
> heavy-handed nature of denying all dial-up traffic. Rate-limiting doesn't
> interfere with low-volume legitimate mail, but it really cramps spam.

It interferes heavily with transmission of large files via email, though,
and this *IS* a valid use of service.

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