How to configure Bind9 to work with wildcard domains?

March 15, 2015 17.7k views
DNS Ubuntu
atipugin
By:
atipugin

My app allows users to use own domains for their profiles. They should be able to delegate their domains to my ns servers (i.e. ns1.mynsdomain.com, ns2.mynsdomain.com).

So i decided to try Bind9 as a DNS server, but can't figure out how to configure it properly to work with wildcard domains.

Things i did:

  1. Added zone:
zone "." {
    type master;
    file "db.wild";
};
  1. Added db.wild file with following content:
$TTL    86400
@   IN  SOA  mynsdomain.com. root.mynsdomain.com. (
             100500     ; Serial
             604800     ; Refresh
              86400     ; Retry
            2419200     ; Expire
              86400 )   ; Negative Cache TTL

    IN  NS  ns1.mynsdomain.com.
    IN  NS  ns2.mynsdomain.com.
    IN  A   MY_SERVER_IP_ADDRESS

ns1 IN  A   MY_SERVER_IP_ADDRESS
ns2 IN  A   MY_SERVER_IP_ADDRESS

*.  IN  A   MY_SERVER_IP_ADDRESS

Now if i try to ping example.com (which is already delegated to ns1.mynsdomain.com./ns2.mynsdomain.com.), it responds with "cannot resolve example.com: Unknown host"

What's wrong with my setup?

Log In to Comment
4 Answers
tonyweb March 15, 2015

Hi,

Remove the A record, and make it a CNAME

*. MYDOMAIN. IN CNAME MYDOMAIN.

Mind the dots at the end of the MYDOMAIN

Reply
stabidlo March 15, 2015

Remove the dot and change A to CNAME

*  IN  CNAME   MY_SERVER_IP_ADDRESS
Reply
atipugin March 15, 2015

Thanks guys, now it seems to work. But there is one weird thing - example.com and www.example.com works fine, but any other subdomain (i.e. app.example.com) don't. Any suggestions?

Reply
tonyweb March 16, 2015

What do you mean, doesn't work?

You will need a *. mydomain.com in your virual hosts conf as well.

Or add the subdomains you want to use there.

https://achtig.nl

Wildcard ssl, dns and virtual hosts.....

Reply
Have another answer? Share your knowledge.

Related Questions