>>>>> "Suresh" == Suresh Ramasubramanian <[EMAIL PROTECTED]> writes:
Suresh> +++ Sandip Bhattacharya [linux-india] <13/03/02 21:46
Suresh> +0530>:
>> [snip]
>> 2. Same goes for DUL lists. Why cant I use my dialup for
>> sending mails directly to servers? I agree it can be abused,
>> but then
Suresh> s/"can be"/"is, on a regular basis"/g
Suresh> Here, for example, is one of about a couple of dozen
Suresh> entries I just saw from a hinet.net dynamic IP (hinet
Suresh> provides dialup / cablemodem access)
>> Date: Wed Mar 13 16:44:22 2002 Count: 1008 mails from
>> 61.220.116.45 (61-220-116-45.HINET-IP.hinet.net) in last 15
>> mins Telnet Banner: Connection timed out Potential users who
>> sent from this ip: <bounce> => 1008
Suresh> Spam, with MAIL FROM:<> so that it can't be blocked, to
Suresh> assorted users 99.99% of whom don't exist (a classic
Suresh> "dictionary attack"), advertising what looks like a shop
Suresh> selling bras and panties in Taipei, Taiwan. Most of the
Suresh> users in the domain this moron hit are in (where else) the
Suresh> USA.
Suresh> 1008 spams in fifteen minutes, direct to MX.
Suresh> Ten such entries from several nearby IPs, before I noticed
Suresh> and blocked the /24 that idiot was coming from ... and
Suresh> this is just *one* of the dictionary attacks (typically, I
Suresh> see four or five a day - some far more virulent than this
Suresh> - record being 35,000 attempted deliveries in fifteen
Suresh> minutes).
>> it gives me an immediate record of whether my mail has been
>> sent to the destination successfully, rather than having to
>> sometimes wait for days for ISP mailservers to send them.
Suresh> Just because your ISP is incompetent?
I've received spam from Yahoo and Hotmail. Are they on anyone's
blackhole list?
Instead of blocking whole DUL's people who're concerned about spam
should get the accounts of those who spam using a dialup removed by
contacting the ISP, exactly as they do for the free webmail services.
Why this stepmotherly treatment of dialup users?
Regards,
-- Raju
--
Raju Mathur [EMAIL PROTECTED] http://kandalaya.org/
It is the mind that moves
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