Is my DNS set up properly for reverse lookups?

[Barry Margolin]

In article <930331427.776.48 at news.remarQ.com>,
Tim Lanza <Tim at Lanzahost.com> wrote:
>Thank you, Barry, I really appreciate the assistance.  Please pardon one
>last request...  OK, so PTR records can be listed for multiple domains.  My
>single reverse zone file looks like this:
>
>@       IN      SOA     firstdomain.com. hostmaster.firstdomain.com.  (
>                                      1999050900 ; Serial
>                                      8H      ; Refresh
>                                      2H      ; Retry
>                                      1W      ; Expire
>                                      1D )    ; Minimum
> NS foo.firstdomain.com.
>444 PTR foo.firstdomain.com.
>444 PTR www.firstdomain.com.

I just noticed that in your forward domain, www.firstdomain.com *is* a
CNAME record.  PTR records should only point to primary names, not to
aliases.  You should remove the second PTR record.

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
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