[67375] in North American Network Operators' Group

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Re: Stopping open proxies and open relays

daemon@ATHENA.MIT.EDU (William Allen Simpson)
Mon Feb 9 08:52:09 2004

Date: Mon, 09 Feb 2004 08:51:42 -0500
From: William Allen Simpson <wsimpson@greendragon.com>
To: nanog@merit.edu
Errors-To: owner-nanog-outgoing@merit.edu


Gregh wrote:
> 
> Optus in Australia have taken the line of blocking port 25 to anything at
> all excepting contact with their own servers. Seems to work. Some pissed off
> customers with their own smtp progs etc but my guess is that this would fit
> your bill.
> 
Earthlink and many others have been doing this in the US for a long time. 

But, they don't require any "authorization" in sending, despite that 
being available built-in to NetScape/Mozilla for many years, and they 
don't seem to actually scan their outgoing email for virii and cut off 
the user.

I'm not sure this is the answer.
-- 
William Allen Simpson
    Key fingerprint =  17 40 5E 67 15 6F 31 26  DD 0D B9 9B 6A 15 2C 32

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