> That's my interpretation of RFC 2181, Clarifications to the DNS > Specification, section 10.3. MX and NS records.
> The domain name used as the value of a NS resource record, or part of > the value of a MX resource record must not be an alias. Not only is > the specification clear on this point, but using an alias in either > of these positions neither works as well as might be hoped, nor well > fulfills the ambition that may have led to this approach. In my counterinterpretation, 'alias' = 'CNAME.' The existence of two hostnames for an IP address does not mean that they are not legitimate A records, and thus 'not aliases.' (To "prove" that the A records can have equal weight, you can have two PTRs--which is RFC-legal, though rarely supported at the application level and thus serves as more of a cosmetic reminder.) -Sandy To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
