Thanks Sandy, interesting response, it got me thinking a bit
wouldnt the spammer/attacker need to have delegated authority over the source
ip address space and control of DNS infrastructure to forge a PTR record? I
have been doing this a while and I dont recall ever seeing a message
http://danjacoby.de/modules/Search/life.html
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wouldnt the spammer/attacker need to have delegated authority over
the source ip address space and control of DNS infrastructure to
forge a PTR record?
Well, either delegated authority *or* a subscriber agreement with the
ISP that allows PTRs to be requested/modified. For example,
