Virtual DNS questiona and reverse lookup table conflicts

[Mikkel L. Ellertson]

Daniel B. Thurman wrote:
> Mikkel L. Ellertson wrote:
>> Forward lookups are easy - just have a different zone file for each
>> domain. Reverse are easy if the domains have different IP addresses,
>> but a problem if they do not. WEB hosting services do this all the
>> time. Each hosted domain returns the same IP address (if on the same
>> server) but reverse lookup returns the information for the WEB
>> server hosting the domains.
>>
> Yes, as you said: "Reverse are easy if the domains have different IP
> addresses,
> but a problem if they do not" and therein lies my problem.  The IP
> addresses
> are the same in the reverse lookup tables but the return domain name is not
> the same as they are based on the domain name itself.
> 
> So, as I said earlier, if I do a reverse IP query, which
> will be returned?  host1.domain1.com or host1.domain2.com?
> 
> So, I am trying to figure out how this is done.
> 
> Do you know how the web-hosting sites do it?
> 
Web-hosting sites do not do it. Then again, most sites that check do
a lookup of the domain name and see if the IP address matches the
address of the machine connected to it, and not a reverse DNS lookup.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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