John Rudd wrote: > Eric A. Hall wrote: >> On 10/23/2006 7:01 PM, John Rudd wrote: >>> Eric A. Hall wrote: >>>> http://www.ehsco.com/misc/spamassassin/std_compliance.cf might help or >>>> work for what you're doing. >>>> >>>> Make sure to read the disclaimers and warnings >>> Those helped a lot. There's only three checks I can't do with them >>> (probably need to use a plugin for it): >>> >>> a) does the hostname in the PTR record point to a CNAME instead of >>> an A record >> >> That's not illegal. It's pretty common too, since subnet delegation of >> in-addr space only works on /8, /16 and /24 subnets due to the way that >> octets are mapped to domain name labels in that hierarchy. > > RFC 1912 says "don't do that" :-) >
And RFC 2317 says "Do that". http://www.faqs.org/rfcs/rfc2317.html
