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Re: [mail-vet-discuss] Seeking consensus on MUA use

2008-12-12 18:41:10
Douglas Otis wrote:

No, iprev would not be a good solution. The reverse IP address space  
is poorly maintained which causes resource limited performance to be  
reduced by an order of magnitude while waiting for the timeouts.
  

But iprev requires relaying of the IP address as part of its reported 
output.  So the header field would report:

    Authentication-Results: <authserv-id>; iprev=<result> 
policy.iprev=<ip-address>

You could, I suppose, use that to relay the IP address to an internal 
MUA or filter in association with results from other methods, but that 
isn't the intended use of iprev.  That sort of thing remains out-of-scope.
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