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Re: [Asrg] What are the IPs that sends mail for a domain?

2009-06-22 06:41:14


--On 19 June 2009 11:30:13 -0700 Douglas Otis <dotis(_at_)mail-abuse(_dot_)org> 
wrote:

MTP is heavily abused, and soon IPv6 is about to become a necessity.   To
remain practical, connectivity must be based upon _immediate_ and
_stable_ evidence of legitimate email operation, and not upon any number
of authorization transactions.  Each additional transaction to support an
authorization scheme will be multiplied by the typical number of attempts
made by abusive senders.

Except that results can be cached.

 This means providers need to exclude
problematic users, and not become a task pushed toward recipients.  Such
pushing is not practical and often leads to unfortunate mistakes.



--
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
For new support requests, see http://www.sussex.ac.uk/its/help/
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