North American Network Operators Group

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Re: Stopping open proxies and open relays

  • From: William Allen Simpson
  • Date: Mon Feb 09 08:53:48 2004

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
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