NEWBIE: Why this zone file fails?

[Mark_Andrews at isc.org]

> 
> I tried this on my own box. 
> 
> -- file: my-box.com.zone --
> 
> $TTL 3h
> @ IN SOA my-box.com. root.my-box.com. ( 200205241943 3h 1h 1w 1h )

	The serial number is too big.  Use YYYYMMDDVV.  The maximum
	value is 4294967295 (2^32-1).

> my-box.com. IN NS ns.my-box.com.

	ns.my-box.com. is a CNAME. Either make ns.my-box.com a A record
	or use "my-box.com. IN NS my-box.com.".

> 
> localhost.my-box.com.        IN A 127.0.0.1
> my-box.com.                  IN A 192.168.0.1
> 
> ns.my-box.com. IN CNAME my-box.com.
> www.my-box.com. IN CNAME my-box.com.
> ftp.my-box.com. IN CNAME my-box.com.
> mail.my-box.com. IN CNAME my-box.com.
> 
> my-box.com. IN MX 10 my-box.com.
> 
> --
> 
> But it fails. What did I do wrong?
> 
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org