How to set up DNS to only add aliases?

[Itai Tavor]

I should have given more information in my original post...

What I want to do is create sub-domain names, not assign registered
domain names. So, if the ISP's DNS is the master for mycompany.com, I
want to create aliases of the form sub1.mycompany.com,
sub2.mycompany.com, etc. But to do that, it seems to me that I need to
set up my own DNS as master for the mycompany.com domain, which would
clash with the ISP.

Michael Voight wrote:

> Well, in order to create these virtual hosts and have people resolve to
> them from outside your network, you have to have the domains in question
> registered to use your nameservers. Aliases for other zones would not
> usually interfere with the zone the ISP controls. You just configure the
> zones with SOA, NS, and CNAME records pointing to the hostname that is
> in your real zone, or simply using A records with the address of the
> webserver.
> 
> Michael
> 
> Itai Tavor wrote:
> > 
> > Hi,
> > 
> > I'm a complete newbie when it comes to DNS... my ISP has set up DNS
> > records for my domain, and I want to add aliases to my web server so I
> > can use apache's named virtual hosts. How do I set up my DNS server so
> > it only creates the aliases, without interfering with the domain
> > records at the ISP? A complete example of the required config files
> > would be greatly appreciated.
> > 
> > Thanks
> > 
> > Itai Tavor