Subdomains and MX record problem

[Mark.Andrews at nominum.com]

> Hello, 
> 
>  I'm using a Redhat Linux as DNS server with Bind named 8.2.2-P3.
> 
>  I have a problem with a MX record when setting it up with subdomain.
> 
> The subdomain is "amd.asso.be" with the following DB file :
> 
> ---------------
> @       IN      SOA     localhost. root.vpresence.com.  (
>                                         95305646118
>                                         28800
>                                         14400
>                                         3600000
>                                         86400
>                                                 )
>                 IN      NS      bizns1.vpresence.com.
> www     IN      A       195.162.204.216
> ftp     IN      A       195.162.204.216
> mail    IN      A       195.162.204.210
>                 MX      10      195.162.204.210.
>                 IN      NS      bizns2.vpresence.com.
> ------------

	There are four problems here.

	1. MX records have hostnames as the second field not IP addresses.
	2. owner names are inherited from the previous record if not
	explicity stated.  You actually created A, MX and NS records for
	'mail' when your intention was to just create a A record.  Either
	use '@' as the owner of the MX record or move these records back
	above www.
	3. The origin field in the SOA record is wrong.  It should be the
	name of the machine that contains the master zone file.  localhost
	is not correct.
	4. by convention most zones contain a localhost record.
	
	Mark

@       	IN      SOA     bizns1.vpresence.com. root.vpresence.com.  (
                                         95305646118
                                         28800
                                         14400
                                         3600000
                                         86400 )
                IN      NS      bizns1.vpresence.com.
                IN      NS      bizns2.vpresence.com.
                IN	MX      10 mail
localhost	IN	A	127.0.0.1
www     	IN      A       195.162.204.216
ftp     	IN      A       195.162.204.216
mail    	IN      A       195.162.204.210

> 
>  IP 195.162.204.210 and 195.162.204.216 are not those of the redhat DNS
> server ... www is working fine, ftp also ... mail.amd.asso.be is right
> (ping are OK) 
> 
> BUT, when trying to send email to the SMTP server "mail.amd.asso.be", it
> failed because the resolution cannot find the MX for this domain name :
> "amd.asso.be" !
> 
> When trying a NSLOOKUP on bizns1.vpresence.com, I get the following result
> :
> 
> -----
> Default Server:  bizns1.vpresence.com
> Address:  212.122.35.3
> 
> > set type=MX
> > amd.asso.be
> Server:  bizns1.vpresence.com
> Address:  212.122.35.3
> 
> amd.asso.be
>         origin = localhost
>         mail addr = root.vpresence.com
>         serial = 816365606
>         refresh = 28800 (8H)
>         retry   = 14400 (4H)
>         expire  = 3600000 (5w6d16h)
>         minimum ttl = 86400 (1D)
> -----
> 
>  This is not a MX record output ... why ??? 
> 
> I have already tried with another line for the MX => " MX 	10
> mail.amd.asso.be."  but I get the same results
> 
>  I have made NSLOOKUP for some other computer with the same output
> 
>  all help welcome, thanks in advance
> 
>  --------------------
> Michael Delatte
> michael at biz.be
> 
> 
--
Mark Andrews, Nominum Inc. / Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at nominum.com