Re: DNS Reverse lookup zone

Barry Margolin <barry.margolin@level3.com> a écrit:

[snip]

>>and then the zone file with
>>$TTL 1D
>>@ IN SOA ns1.example.com. hostmaster.example.com. (
>>all the good stuff );
>>NS ns1.example.com.
>>1 PTR mail.example.com.
>>2 PTR mail1.example.com.
>>
>>or would I need the PTR records to point to my ISP?
>
> The PTR records should point to your hostnames -- they should just be
> the opposite of the A records that they're maintaining. So if they
> have:
>
> mail.example.com. IN A x.x.x.1
> mail1.example.com. IN A x.x.x.2
>
> then your records are correct.

great. Would they then have to add A records for my nameserver?
I.e. how does the rest of the world find my records - this is what
confuses me, if the ISP points an A record at my nameserver, then what
happens when people try to resolve stuff that isn't on my name server?
Do I need to add a forwarder in the options bit?
As you can probably tell, I'm very new to this and am struggling to get
my head around it properly.

>>and then would I not have any other zone files in there at all?
>
> There's usually a boilerplate zone for the 127.in-addr.arpa reverse
> domain.

Sorry, I'm not sure what you mean by this - I have a 127.0.0.zone zone file
with this in.

$TTL 1W
@ IN SOA ns1.example.com. hostmaster.example.com.
(
1 ; serial (d. adams)
8H ; refresh
2H ; retry
4W ; expiry
1D ) ; minimum

IN NS ns1.example.com.
1 IN PTR localhost.

and in named.conf i have

zone "0.0.127.in-addr.arpa" {
type master;
file "127.0.0.zone";
};

Is this what you meant?

thanks

--
Andrew Lee | gladius@gladius.f9.org.uk \PGP:DC84 FD28 DA8A E38A A9DD|
AVIEN Founding Member |http://avien.org \ID:18A9 AFAD 5422 43F1 4C81|
// It is not certain that everything is uncertain -- Blaise Pascal
// Opinions expressed are my personal views, not those of my employer