[no subject]

nslookup cobalt.com

See if you are able to get a response with the DNS entry? If you are then you are
able to resolve domains outside your box and somewhere it is working. If you are
not then you need to get the address of a dns server form Interliant.


> Feb 20 23:35:04 www sendmail[30238]: gethostbyaddr(209.196.37.204) failed: 2
> Feb 20 23:35:21 www sendmail[8552]: gethostbyaddr(209.196.37.204) failed: 2
> Feb 20 23:35:44 www sendmail[30238]: gethostbyaddr(209.196.37.205) failed: 2
> Feb 20 23:36:01 www sendmail[8552]: gethostbyaddr(209.196.37.205) failed: 2

These errors are the erros logged when sendmail tries to resolve a name to the IP
address. It is unable to do so since you have your IP addresses forwarding to
multiple names. It takes sendmail a good few minutes to timeout and proceed as
normal.

The reason you have all those PTR entries (Reverse DNS) is because by default
when you add an Address (A) record there is a little check box in the Cobalt GUI
that is check that automatically adds a Reverse DNS entry. When you add A records
make sure to always uncheck that box. Then you can go in and add a single PTR
record if it is a new IP address. Let me give you a big example of this:

Say you have 4 domains on one IP address your DNS should look like this:

Ex. domain1.com
        domain2.com
        domain3.com
        domain4.com
        IP: 111.111.111.111

DNS settings:

domain1.com > 111.111.111.111
www.domain1.com > 111.111.111.111
domain2.com > 111.111.111.111
www.domain2.com > 111.111.111.111
domain3.com > 111.111.111.111
www.domain3.com > 111.111.111.111
domain4.com > 111.111.111.111
www.domain4.com > 111.111.111.111
111.111.111.111/24 > domain1.com

See how with all those domains you still only have one (1) PTR record for the IP
addresses. Of course that is an incomplete DNS record for all those domains,
still need NS and MX, but you should get the picture.

Hope this helps.

    -Dennis