On Thu, 28 May 2015, Rob Janssen wrote:
But that is not what I mean. What is NOT allowed (by the spec) is to have:
name IN MX 10 mail mail IN CNAME some.mail.server
So you can have a CNAME pointing to MX, but not MX pointing to CNAME.
To be specific, a CNAME RR points to another name which could be an MX RR. Apart from associated DNSSEC RRs, a CNAME basically overrides anything else defined for that name.
Antonio Querubin e-mail: tony@lavanauts.org xmpp: antonioquerubin@gmail.com