DNS Tweak

viniosity · 01-04-2005, 01:45 PM

I have a dns server (bind) working and everything is ok except one minor problem. When I ping my A records things work but the TLD doesn't respond.

That is, ping mail.foo.com is ok but ping foo.com says unknown host.

Any idea where I went wrong?

Here is my file for foo

Code:

$TTL    604800
@       IN      SOA     foo.com. root.foo.com. (
                              1         ; Serial
                         604800         ; Refresh
                          86400         ; Retry
                        2419200         ; Expire
                         604800 )       ; Negative Cache TTL
;
@       IN      NS      foo.com.
1.0.0   IN      PTR     localhost.
        IN      MX      10 dns.mail.foo.com  ; mail server
;
#www    CNAME   dns
ftp     CNAME   dns
smtp    CNAME   dns
pop     CNAME   dns
proxy   CNAME   dns
news    CNAME   dns
;
www     A       192.168.1.5
mail    A       192.168.1.2
;

amfoster · 01-04-2005, 05:30 PM

there is no A record for foo.com

also,
You have NS as foo.com. I am surprised that even works since the nameserver is typically a host machine.

scowles · 01-04-2005, 07:06 PM

Quote:

Originally posted by viniosity
I have a dns server (bind) working and everything is ok except one minor problem. When I ping my A records things work but the TLD doesn't respond.

That is, ping mail.foo.com is ok but ping foo.com says unknown host.

Any idea where I went wrong?

I'm surprised anything is working. Along with amfoster's comments, add the following

1) SOA record is referring to a domain name, not a fully qualified domain name. i.e.

Code:

@       IN      SOA     foo.com. root.foo.com.
   should be...
@       IN      SOA     dns.foo.com. root.foo.com.

2) The NS record is pointing to a domain name, not a fully qualified domain name. i.e.

Code:

@       IN      NS      foo.com.
   should be...
@       IN      NS      dns.foo.com.

3) There is no glue record (A) for the NS record. i.e.

Code:

dns       IN      A      192.168.1.4

Note: Change the IP address above to meet your requirements

4) What the hell is a PTR record doing in a forward zone definition? Localhost should always point to 127.0.0.1

Code:

1.0.0   IN      PTR     localhost.
   should be...
localhost     IN      A       127.0.0.1

5) Your MX record is pointing to a FQDN that does not exist. For simplicaity sake, group the MX record with the NS record and add the @ sign. i.e.

Code:

        IN      MX      10 dns.mail.foo.com  ; mail server
should be... Note the trailing period
@       IN      NS      dns.foo.com.
@       IN      MX      10 mail.foo.com.  ; mail server

6) All the CNAME's <groan> point to a non-existant A record. i.e. the "dns" address record does not exist. Item 3 above should fix this problem.

Code:

#www    CNAME   dns
ftp     CNAME   dns
smtp    CNAME   dns
pop     CNAME   dns
proxy   CNAME   dns
news    CNAME   dns

7) If you want to ping the domain name (foo.com), then an Address record is required. i.e.

Code:

@               IN      A       192.168.1.4

Note: Change the above IP address to the address that you want to assign to the domain name. Possibly your web server IP address?