dnswalk output

[Ian Masters]

Hello

I'm trying to test my local dns with dnswalk (newest version, v 2.0.2)
and I'm confused about the output. I've read the dnswalk man page and
searched the list archives but I'm none the wiser.

The output of dnswalk looks like this:

[root at mail slaves]# dnswalk xx.yyyyy.co.jp.
Checking xx.yyyyy.co.jp.
Getting zone transfer of xx.yyyyy.co.jp. from dev-gw.xx.yyyyy.co.jp...done.
SOA=dev-gw.xx.yyyyy.co.jp       contact=root.xx.yyyyy.co.jp
BAD: xx.yyyyy.co.jp NS mail.xx.yyyyy.co.jp: CNAME (to mail)
WARN: xx.yyyyy.co.jp MX mail.xx.yyyyy.co.jp: CNAME (to mail)
0 failures, 1 warnings, 1 errors.

And here is my zone file:

[root at dev-gw named]# cat db.xx.yyyyy.co.jp

$ORIGIN .
$TTL 86400      ; 1 day
xx.yyyyy.co.jp          IN SOA  dev-gw.xx.yyyyy.co.jp.
root.xx.yyyyy.co.jp. (
                                2008100905 ; serial
                                10800      ; refresh (3 hours)
                                3600       ; retry (1 hour)
                                604800     ; expire (1 week)
                                86400      ; minimum (1 day)
                                )
                        NS      dev-gw.xx.yyyyy.co.jp.
                        NS      mail.xx.yyyyy.co.jp.
                        MX      10 mail.xx.yyyyy.co.jp.
$ORIGIN xx.yyyyy.co.jp.
mail                    A       172.16.252.110
dev-gw                  A       172.16.252.104

If dnswalk is still a reliable tool, could someone help with deciphering
its report please.

Thanks very much.

Ian Masters