DNS question, null MX records

[dotis at mail-abuse.org (Douglas Otis)]

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