DNS problem

[Mikkel L. Ellertson]

Luc MAIGNAN wrote:
> Hi list,
> 
> I've a DNS behaviour I don't understand.
> 
> 
> 1/ I've a DNS server which resolves mydomain.com and some aliases :
> server.mydomain.com (the alias is put in the zone file like this   :
> SERVER    A   the_ip)
> 2/ from the DNS server,all is right : dig mydomain.com and dig
> server.domain.com give the good informations
> 3/ from a computer somewhere on the internet, a dig mydomain.com give
> the Ip address of the server, but server.mydomain.com can't be resolved.
> 
> The only way to have resolutions is to give the ip address of my server
> as the primary dns of the internet connexion, but unfortenaly, I can't
> ask all people of the world to do this.....
> 
> Can somebody help me ?
> 
> Very best regards
> 
The problem is not on your local machine. It is with the primary
name server for your domain. Without real information that is about
as much as we can tell you. You need to update the DNS record to add
a record for server.mydomain.com. What type of record depends on
what you are trying to do. How you do it depends on who is providing
the name servers. From what little you have told us, it sounds like
you are getting the name servers as part of your domain name
registration. There is probably a web form to modify the records.

One thing to keep in mind - when you change the DNS records, it
takes a while for the changes to show up everywhere. A lot of ISPs
are running caching name servers, and if the entries for your domain
are in the cache, then they have to expire before the server checks
again. This can include an entry for server.mydomain.com that
basically says that the name server for the mydomain.com says that
server.mydomain.com does not exist.

Mikkel
-- 

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