What would be the operational advantage of accepting mail from IPv6 hosts
too lame to set up rDNS?
we will never know, because every v6 end system will have a ptr, either
naturally, or machine-generated for it, because v6 providers will not
want their rank-and-file v6 endsystems to be excluded from important
activities such as transmitting e-mail.
You might want to talk to large providers that do v6 now. With only one
exception I can think of, they have no plans to do synthesized v6 rDNS,
and they routinely block port 25 from all their consumer networks.
Regards,
John Levine, jo...@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly
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