DNS help with mx records

[phn at icke-reklam.ipsec.nu]

Ricardo Fitzgerald <axis at movinet.com.uy> wrote:

> Hi,

> I have a problem setting up my mail server, I had followed the
> tutorial DNS how to , and apparently everything worked fine, but
> something must be wrong because the mail server is not working. After
> careful examination I found out the problem must be in the way I
> configured mx in my zone files.

Yes, your MX has a CNAME as RHS. That illegal.


> Setup: linux server with 2 NICs 200.61.76.88 --> Internet and
> 192.168.0.1 -->Internal net win PCs.

> my ermitagemontevideo.com zone is:

> $TTL 3D
> @		IN SOA	ns.ermitagemontevideo.com.	root.ermitagemontevideo.com. (
> 			2002031806			; serial
> 			8H				; refresh
> 			2H				; retry
> 			4W				; expiry
> 			1 )				; minimum

> 		NS	ns
> 		MX	10 mail

> localhost	A	127.0.0.1


> gw		A	200.61.76.65


> ns		A	200.61.76.88
> 		MX	10 mail

Why don't you just write :
	IN	MX 10 ns.ermitagemontevideo.com.  ??? 


> www		CNAME	ns
> ftp		CNAME	ns

> mail		CNAME	ns  --> Here is where I´m not sure. mail is under the same
> IP, but I don't know if I have to write the record as a CNAME or this
> other way:

> mail            A       200.61.78.88
>                 MX      10 mail

> Which is the correct way ? If I have mail and ns under the same ip
> 200.61.76.88,
> should I configure mail as CNAME or as an A record as shown above ?
> Right now is configured as the first case.
> Another question: linux is the gateway to the internal network, this
> computer

>  
> linux		A	192.168.0.1
> 		MX	10 mail

> ermitage	A	192.168.0.2
> 		MX	10 mail

> facturacion	A	192.168.0.3
> 		MX	10 mail

> recepcion	A	192.168.0.4
> 		MX	10 mail

> telefono	A	192.168.0.5
> 		MX	10 mail

> internet	A	192.168.0.6
> 		MX	10 mail

> -----------------------------------------------------------------------

> my 200.61.76 zone:

> $TTL 3D
> @	IN SOA	ns.ermitagemontevideo.com.	root.ermitagemontevideo.com.	(
> 		2002031806			; serial
> 		8H				; refresh
> 		2H				; retry
> 		4W				; expiry
> 		1D	)			; minimum

> 	NS	ns.ermitagemontevideo.com.

> 65	PTR	gw.ermitagemontevideo.com.
> 88	PTR	ns.ermitagemontevideo.com.
> 88	PTR	mail.ermitagemontevideo.com. <---- I'm not sure about this!

You only need one PTR, and as 'mail' is unneeded drop it.


> -------------------------------------------------------------------------------
> my 192.168.0 zone
>  
> $TTL 3D
> @	IN SOA	ns.ermitagemontevideo.com.	root.ermitagemontevideo.com. (
> 		2002031806		  	; serial
> 		8H				; refresh
> 		2H				; retry
> 		4W				; expiry
> 		1D )				; minimum

> 	NS	ns.ermitagemontevideo.com.

> 1	PTR	linux.ermitagemontevideo.com.
> 2	PTR	ermitage.ermitagemontevideo.com.
> 3	PTR	facturacion.ermitagemontevideo.com.
> 4	PTR	recepcion.ermitagemontevideo.com.
> 5	PTR	telefono.ermitagemontevideo.com.
> 6	PTR	internet.ermitagemontevideo.com.

> I'm using Bind 9.2 

> Any help will be greatly appreciated ...

> Regards,

> Rick


-- 
Peter Håkanson         
        IPSec  Sverige      ( At Gothenburg Riverside )
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