RE: [Exim] IP address for MX records

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Lähettäjä: Dave C.
Päiväys:  
Vastaanottaja: Jan Johansson
Kopio: Suresh Ramasubramanian, Tony VanScoy, exim-users
Aihe: RE: [Exim] IP address for MX records
On Thu, 22 Aug 2002, Jan Johansson wrote:

$ORIGIN whatever.com.

> >     IN    MX    10    mail

>
> Shouldnt MX pointers always be FQDN? And dont forget the trailing dot! :)


Actually, this is fine.

The whole reason you add the trailing dot, is becuase if you put:

@     IN     MX     10 mail.whatever.com


BIND will usually end up interpreting that as
"mail.whatever.com.whatever.com", becuase it apppends the current
origin if the dot is left off.

On the other hand, if you put:

@     IN     MX     10 mail.


Then that will end up being just "mail", which will of course be wrong.

Either of the following are good though:

@     IN     MX     10 mail.whatever.com.
@     IN     MX     10 mail



In the frst case, the entire FQDN is specified, and the trailing dot
completes the name.

In the second case, since there is no trailing dot, bind tacks on
"whatever.com.", and all is well.


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