[IP] more on Dave's IP no more? Big ISP's want 500 e-mail/day limit.
Begin forwarded message:
From: Suresh Ramasubramanian <suresh@xxxxxxxxxx>
Date: June 27, 2004 9:39:42 AM EDT
To: dave@xxxxxxxxxx
Cc: James Seng <jseng@xxxxxxxxxxxx>
Subject: Re: [IP] more on Dave's IP no more? Big ISP's want 500
e-mail/day limit.
David Farber wrote:
From: James Seng <jseng@xxxxxxxxxxxx>
It isn't the fact they limit email/day or block port 25 specifically
that scare me. It is the fact that they are about to go down a slippy
sloop, investing in an infrastructure that allows them to do so.
Would you want your cable blocking port 5060 (SIP) and then limit your
outgoing call to less then 500/day?
Yes, so that'd be when shady telemarketers start making thousands of
SIP calls a day?
The port 25 filters are being dismissed as band aids, or as restriction
of the use an internet account can be legitimately put to.
However there is a specific RFC defined port for mail submission
(587). This was proposed in RFC 2047, in 1998, well before this entire
trojan / virus / port 25 blocking issue became as general as it is now.
SMTP rate limiting is also not a very new idea, being proposed as early
as 1999 (RFC 2505) and widely implemented by several providers.
I guess seven years is sufficient early warning for this?
srs
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