domain names not resolving

[Stephane Bortzmeyer]

On Wed, Mar 21, 2007 at 08:35:12AM +0100,
 Lucien GENTIS <lucien.gentis at lorraine.iufm.fr> wrote 
 a message of 120 lines which said:

> I don't understand the meaning of line:
> 
> localhost       A       207.228.252.47

Unusual and strange but I do not see it as a problem.
 
> In addition, if ns0 corresponds to 207.228.252.47 ,
> I think www and mail must have CNAME records instead of A record
> since they correspond to the same IP address.

At least not for mail. Since it is on the right-hand side of the MX,
it cannot be a CNAME. The current zone seems fine.