RRs for mail server

[Kevin Darcy]

Jukka Salmi wrote:

> On Wed, 03 Sep 2003 14:33:00 GMT, Barry Margolin wrote:
> [...]
> > There's no requirement that the name in the HELO command match the name in
> > the PTR record.  They often don't match when the mail server is multi-homed
> > and therefore has multiple addresses, or as in cases like yours where the
> > server simply has multiple names.
>
> What about the MNAME in a SOA record? And NS records? Are there requirements
> that their names should match the names in their PTR records? Or is it OK
> as long they have A (and not CNAME) records?

None of these things are required by the Internet standards, however domain
owners (including TLD registries) may impose requirements on the names of
nameservers to which they delegate subzones, or on the contents of those
subzones.


- Kevin