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RE: Stealth Blocking
From: Roeland Meyer <rmeyer () mhsc com>
Date: Thu, 24 May 2001 18:27:50 -0700


From: Steve Sobol [mailto:sjsobol () NorthShoreTechnologies net]
Sent: Thursday, May 24, 2001 2:51 PM

Shawn McMahon 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.

The transmission of large files is not a valid use of email.

Is too... I send large documents regularly, via email. I just sent a 125
page word doc, with about 20 embedded Visio drawings and a bunch of embedded
Excel spreadsheets. It was huge. Most of the recipients are on dialups with
Win98. How else do you expect me to get it to them ... FTP? Most of them are
NOT computer jocks.


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