[windows2000] DNS zone file -- syntax

  • From: "Alfonso Lopez de Ayala" <alopezdeayala@xxxxxxxxxxxx>
  • To: <windows2000@xxxxxxxxxxxxx>
  • Date: Thu, 3 Oct 2002 09:05:52 -0700

Can anyone recommend a good document on the web that explains all the
format & syntax of a DNS zone file?  Need to know the exact function of
things like "$ORIGIN", the meaning of asterisks, etc.

For example in a simple domain zone file like this:

$TTL 86400 ; 1 day 
company.com. IN SOA nameserver.isp.com. admin.isp.com. ( 
6587 ; serial 
3600 ; refresh 
900 ; retry 
604800 ; expires 
600 ) ; minimum ttl 
IN NS nameserver.isp.com. 
IN NS nameserver2.isp.com. 
IN MX 10 company.com. 
$ORIGIN company.com. 
www IN A 
newserver IN A
IN MX newserver.iinspect.com. 
* IN A

what does the " IN MX newserver.iinspect.com." really do?
and the asterisk in the last line: "* IN A"?
and the dots at the end of everything?



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