DNS, web and mail server on the same linux box

titel · 12-13-2006, 10:58 PM

Hi everybody,

I want to host my web and mail server on my FC 6 linux server. My domain registar asked me for 2 DNS servers in order to be able to register an domain. The problem is that my ISP only provided me one DNS server.

My question is, is it possible to run the DNS, web and mail server on the same linux box, with only one fixed IP? In BIND's zones configuration what should be the name of the DNS server that I'm running and should I specify the same IP / server name for the web and mail server?

Thank you in advanced for your answer,
titel

bathory · 12-14-2006, 02:30 AM

Quote:

My question is, is it possible to run the DNS, web and mail server on the same linux box, with only one fixed IP?

Absolutely. Just use something like that in your zone file:

Code:

IN      NS      yourdns.domain.com.
IN      NS      your-isp-dns.isp.com
IN      MX      10 mail.domain.com.
yourdns IN A xx.xx.xx.xx
www     IN A xx.xx.xx.xx
mail       IN A xx.xx.xx.xx

Note that the ip of your mail server must resolve to it's name, so in the reverse zone use:

Code:

xx.xx.xx.xx IN PTR mail

titel · 12-15-2006, 04:51 AM

So, this also means that I could be hosting several subdomains on the same machine as well, right?

What would the zones files look like in this case. And further more, what other things have to me changed in order to hava apache serve different content for different subdomains?

titel

bathory · 12-15-2006, 05:25 AM

Quote:

So, this also means that I could be hosting several subdomains on the same machine as well, right?

Yes. The zone file for your domain should look like this (you can use either A or CNAME):

Code:

IN      NS      yourdns.domain.com.
IN      NS      your-isp-dns.isp.com
IN      MX      10 mail.domain.com.
yourdns IN A xx.xx.xx.xx
www     IN A xx.xx.xx.xx
mail       IN A xx.xx.xx.xx
sub1     IN A xx.xx.xx.xx
sub2     IN CNAME sub1

As for apache you should read the apache documentation about vhosts for apache 1.3 or apache 2