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Accepted
tawfekov
Asked: 2009-11-06 06:38:05 +0800 CST

Named alternates between working for example.com & www.example.com

  • 772

I have a domain registered with eNom. From time to time I will do an nslookup example.com and get the IP address. However, when I put nslookup www.example.com it responds

can't find www.example.com: server failed

After restarting Named, I get this error for example.com, while www.example.com is working as expected.

What could be causing this issue?

I am restarting the main name server in our network; the mentioned domain is hosted on another server.

apache-2.2

2 Answers

  1. Best Answer

    declare your www subdomain as a CNAME to your A - example of bind9 configs below:

    --- named.conf

    *SNIP*
zone "domainname.com" {
     type master;
     file "/etc/bind/domainname.com";
     allow-update { none; };
};

    --- /etc/bind/domainname.com

    *SNIP*
@       IN      A       xxx.xxx.xxx.xxx
www     IN      CNAME   @

    Notes:

    • xxx.xxx.xxx.xxx is your IP address (for the domain)

    • there are some parts missing from configs (in the place of SNIP); added only the interesting bits

    Kaplah.

    • 2

  2. Have you actually got a www in your zone file? Just having the name (and the root working) isn't enough to make the www sub domain work.

    • 1