On 23/08/14 13:57, Always Learning wrote: >
> On Sat, 2014-08-23 at 13:01 +0100, Jeremy Harris wrote:
>
>> On 23/08/14 01:50, Systems Controllor wrote:
>>> The above condition, found on the Internet, can not discriminate between
>>> the absence of a host name and the absence of a Reverse DNS entry.
>>
>> What are you defining as "absence of a host name" ?
>
>
> A look-up using the sender's IP address produces: 3(NXDOMAIN)
A lookup of what, in what?
It sounds a bit like a Reverse DNS lookup to me...
If that's what it is, how are you defining the difference
between "absence of a host name" and "absence of a Reverse DNS entry"?
--
Cheers,
Jeremy
