Re: DNS question, null MX records

16 Dec 2009

      On 12/16/09 3:59 AM, Tony Finch wrote:
...
On Wed, 16 Dec 2009, Mark Andrews wrote:
...
Douglas Otis wrote:
...
One might instead consider using:
example.com. 	IN MX 0 192.0.2.0
      	IN MX 10 192.0.2.1
      	...
      	IN MX 90 192.0.2.9
Which will expand to:
example.com. IN MX 0 192.0.2.0.example.com.
      IN MX 10 192.0.2.1.example.com.
      ....
      IN MX 90 192.0.2.9.example.com.
MX records DO NOT take IP addresses.
Sorry for embarrassing mistake.

To avoid server access and hitting roots:

host-1.example.com. IN A 192.0.2.0
...
host-10.example.com. IN A 192.0.2.9

example.com. 	IN MX 0 host-1.example.com.
...
example.com. 	IN MX 90 host-10.example.com.

-Doug