North American Network Operators Group
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Re: Redirecting mail (Re: Throttling mail)

  • From: Adi Linden
  • Date: Thu Mar 25 14:53:59 2004 
> On the other hand, it's probably more effective to find some way of making the
> Cisco gear block outbound 25 from abusive machines.  Transparently redirecting
> the traffic is evil unless you plan to take all responsibility for relaying the
> mail (including mail that has MAIL FROM/RCPT TO that you may not wish to
> relay).

Right now I am blocking all network access for ip addresses I receive 
believeable abuse reports for. The big problem is that it is a manual 
process that does not start until a PC has already sent a massive amount 
of abusive mail. After all, it does take time to read and act upon abuse 
reports. By forcing smtp through a specific server at least some proactive 
measures are possible such as throttling abusive behaviour. 

Adi