no hostname become unresolvable.

[Stephane Bortzmeyer]

On Tue, Feb 23, 2010 at 10:41:37PM +0800,
 Cefull Lo <cefull at gmail.com> wrote 
 a message of 89 lines which said:

> But when I try to ping the server without hostname,

[Technicality: there *is* a hostname, superease.net *is* an hostname.]

> Here the zone file

There is no A or AAAA record for @ (superease.net).
 
> @               IN      NS      dns1.man169.com.
> @               IN      NS      dns2.man169.com.
> @               IN      MX 10   mail.man169.com.