Several CName records for one forward look up zone

[abhi1024]

We have several websites being hosted on a single public IP address. On our internal IIS we use different address headers for different sites. We have created a forward zone with PTR record point to the external IP address for hosting website. My question is can I just have one forward look up zone for with several CNAME records for all the websites or I need to have different forward zones for different sites?
Can somebody tell me how to do this if its possible?

Thanks

 

[ShackDaddy]

If the different sites you want to host on that server have different domain names (flabitz.com, gomers.net, poink.org), then there will have to be public forward lookup zones for each. If each site is just a different host in a single domain (flabitz.mustarz.com, gomers.mustarz.com, poink.mustarz.com) then you'd just use the single forward lookup zone.

Since a CNAME record is just a HOST name, not a fully qualified domain name, you still have to put it in an appropriate forward lookup zone. If your sites are in different DOMAINS, you will need multiple zones.

The benefit of CNAME over A-record is that you will only have to change a single record if your hosting IP changes.

Dave Shackelford
ThirdTier.net

 

[abhi1024]

The way our domain is configured
domain name : ds.xyz.com

We already have a forward look up zone:ds.xyz.com
Now we have two new website sites
(a) xyz.com
(b) aa.xyz.com
These websites are visible externally but not from inside our domain.I am not sure if I need to create a new forward look up zone.
Could somebody please help?

Thanks,
Abhi

 

[ShackDaddy]

Is the forward lookup zone you have for ds.xyz.com internal only?

Do you have an xyz.com zone in your internal DNS? Or just a zone for ds.xyz.com?

I also need to make sure you know what you are saying: would you say that ds.xyz.com is a namespace, or is it a specific host? Do you have internal FQDNs like server.ds.xyz.com, or do you have things like server.xyz.com?

Dave Shackelford
ThirdTier.net

 

[abhi1024]

We just have a foward zone for ds.xyz.com only which is internal.As of now we do not have xyz.com in our internal DNS.
We have FQDN as server.ds.xyz.com

 

[ShackDaddy]

Then if it doesn't work properly right now, you may want to add another internal forward lookup zone for xyz.com if you want internal hosts to be able to resolve the IP properly.

Dave Shackelford
ThirdTier.net