[dns-operations] reverse DNS for DHCPV6 and PD's

[Paul Vixie]

edmonds at isc.org (Robert Edmonds) writes:

> speaking non-operationally but as someone who's stared at a lot of PTR
> records, i'd be very pleased if the practice of assigning generically
> named PTRs by rote would die off entirely.

as long as customers who have business grade connections can get a PTR
that matches their A/AAAA i'm fine with having it default to "none".

from postconf(5):

       reject_unknown_client_hostname
	      Reject the request when 1) the client IP address->name
	      mapping fails, 2) the name->address mapping fails, or 3) the
	      name->address mapping does not match the client IP address.
                ...

IOW, the network operations community should work with the email server
operations community on this.

see also:

http://www.circleid.com/posts/using_domain_filtering_to_effect_ip_address_filtering/
-- 
Paul Vixie
KI6YSY