MX record and PTR questions

[Stephane Bortzmeyer]

On Mon, Jun 20, 2005 at 05:31:46PM -0700,
 wally <wallyx3 at yahoo.com.au> wrote 
 a message of 30 lines which said:

> My question is - does the name "mail" have any significance at all 

No.

> is just an alias that is resolved by the A record.

Yes.
 
                                         You forgot the dot here
                                          v
> domain.com.au  MX 10  mail.domain.com.au

> Also if my server was called server1 - would the reverse PTR have to
> read server1.domain.com.au or the name specified in the MX record
> (in the first case mail.domaim.com.au)

The DNS and BIND do not care. But some servers test that there is a
consistency between the PTR and the A.