MX record in zone file

[Greg Wildman]

On Thu, 2005-01-13 at 11:56 -0800, Rudolf Amirjanyan wrote:
> Hello,
> 
> In DNS records, I.E zone file, is it possible to write IP address of the
> mail server instead of host domain name?
> like:
> 
> DOMAIN.COM in mx 10 123.123.123.123.

If my memory serves me correctly that is not allowed per RFC.

A better way would be to create the A record at the same time, eg.

----- sample test.com zone file ------
$TTL 43200      ; 12 hours
@               IN      SOA     ns1.test.com. hostmaster.test.com. (
                                2005011301 ; serial
                                3600       ; refresh (1 hour)
                                900        ; retry (15 minutes)
                                1209600    ; expire (2 weeks)
                                43200      ; minimum (12 hours)
                                )

                IN      NS      ns1.test.com.

                IN      A       192.168.0.1

                IN      MX      5 mail

mail            IN      A       192.168.0.5
ns1             IN      A       192.168.0.1

www             IN      CNAME   ns1

localhost       IN      A       127.0.0.1
--------------------------------------

The MX record points to the A record which resolves to the IP (in this
case 192.168.0.5)

--
Greg