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Posted by Michael on 11/16/39 11:33
"Malcolm Dew-Jones" <yf110@vtn1.victoria.tc.ca> wrote in message
news:438f5738$1@news.victoria.tc.ca...
> Michael (INERFAZE@aol.com) wrote:
>
> : I just tried a fixed IP of Microsoft
> $domain=GetHostByAddr("207.46.20.30");
> : and that didn't work either.
>
> But it did work! It just didn't do what you wanted it to do. It returned
> the information that was made visible to the host that ran the command -
> in other words, no information.
>
> That is exactly why someone originally said this was "fraught" with
> problems.
>
> You can only get the reverse lookup if an appropriate name server makes
> that information available to you, and they commonly don't do that. Even
> if the information is available to _some_ people on one network, _you_
> will not be able to get it unless that name server is visible to you.
> For example I have my own resolver setup at home, and I can assign names
> to my machines, but my name server setup is not visible to you and so you
> cannot get that information. Lots of machines have names that are only
> visible to some internal network, even if the ip address of that machine
> can access the world.
>
I am not real savvy with all that, but are you telling me that I could see
the IP address of one of your (own resolver handled) machines but not the
dns name?
Did you see my post from 9:22 last night? Suddenly (with no change to my
php) it works 100% of the time (so far.)
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