Trying to run a server on a static IP from my house, DNS questions

[Xn Nooby]

On Thu, Dec 25, 2008 at 2:28 PM, Smoot Carl-Mitchell <smoot at tic.com> wrote:
> On Thu, 2008-12-25 at 01:27 -0500, Xn Nooby wrote:
>
>> My MX record is:
>> 0   @   mail.mydomain.com
>
> This does not look right.  The normal sematics in a DNS zone file of the
> '@' is the domain name in the $ORIGIN meta statement.  Normally, it is
> set to the basename of the domain.  An MX record should look like:
>
> @ MX 5 mail
>
> In DNS terminology names which do not end in a '.' have the $ORIGIN
> domain appended.  In the above record "mail" is expanded to
> 'mail.mydomain.com.', assuming the $ORIGIN statement is 'mydomain.com.'.
> The above record is equivalent to:
>
> mydomain.com. MX 5 mail.mydomain.com.
>
> You can look up the relevant standards for the details of zone file
> syntax.  The DNS is defined in RC1034 and RFC1035.
> --
> Smoot Carl-Mitchell
> System/Network Architect
> smoot at tic.com
> +1 480 922 7313
> cell: +1 602 421 9005
>
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I'm not sure why it is working. Apparently there is tons to learn,
almost not sure where to start. I think I should probably get more
familiar with DNS in general, so I better understand the MX records.
thanks for helping me!