On Wed, 2008-06-18 at 08:38 -0700, Daniel B. Thurman wrote:
> I have several DNS servers and wondered if the following
> record entry is properly set for all of my DNS servers:
>
> $TTL 172800
> @ IN SOA ns1.abc.com. admin.abc.com. (
> 1 ; serial
> 3H ; refresh
> 15M ; retry
> 1W ; expiry
> 1D ) ; minimum
> ;============ Nameserver ================
> @ IN NS ns1.abc.com.
> @ IN NS ns2.abc.com.
> @ IN NS ns3.abc.com.
If you have three name servers for your domain, then you would list them
all as you've done. Though I think you'll find the "@" is actually
redundant, BIND would list them like the following, by default:
IN NS ns1.abc.com.
IN NS ns2.abc.com.
IN NS ns3.abc.com.
> ;============ Mail Exchange =============
> @ IN MX 10 mail1.abc.com.
> @ IN MX 20 mail2.abc.com.
> @ IN MX 30 mail3.abc.com.
Again, this looks fine, you'd list all MX records for your domain.
Again, the @ is probably redundant. I'm presuming you're using BIND, as
that comes with Fedora. Other name servers might write their internal
records differently than BIND.
> @ IN TXT v=spf1 a mx -all
This TXT record would only apply to "@", which is 10.1.0.1. If you
wanted to give each mailserver entry a TXT record, you'd want to write
individual TXT records for each host. One way to do that would be as
I've jammed into the quoted text below. In this case, the TXT record is
associated with the entry above it.
> ;============ Hosts ======================
> @ IN A 10.1.0.1
> mail1 IN A 10.1.0.1
TXT v=spf1 a mx -all
> mail2 IN A 10.1.0.2
TXT v=spf1 a mx -all
> mail3 IN A 10.1.0.3
TXT v=spf1 a mx -all
> ns1 IN A 10.1.0.1
> ns2 IN A 10.1.0.2
> ns3 IN A 10.1.0.2
> ;========================================
--
[tim@localhost ~]$ uname -r
2.6.25.6-55.fc9.i686
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