Elzey, Blaine A (Blaine) belzey at
Wed Sep 6 19:35:18 UTC 2006

You cannot/should not use a CNAME where there is another owner of the same name.

Blaine Elzey
Lucent Technologies
BElzey at

-----Original Message-----
From: bind-users-bounce at [mailto:bind-users-bounce at] On Behalf Of news at
Sent: Wednesday, September 06, 2006 3:41 AM
To: comp-protocols-dns-bind at
Subject: CNAME for

When we started to use bind many years ago we were told that it necessary to use a A-record for <<>> but for <<>> it is possible to use a CNAME.

I.e., a typically zonefile here:
$TTL    14400
@       IN      SOA (
                        2006090501 ; Serial
                        14400 ; Refresh
                        900 ; Retry
                        604800 ; Expire
                        3600 ) ; Negative Cache TTL
@       IN      NS
@       IN      MX      10
;    IN      A             X.X.X.X
www      IN      CNAME

I suppose it must be possible to change the A-record to a CNAME like
this:    IN      CNAME
but I am not sure.

Someone who knows the rules for this?

Best regards
Martin Rådbo

More information about the bind-users mailing list