Inherited DNS
Igmar Palsenberg
maillist at chello.nl
Fri Sep 15 19:48:25 UTC 2000
On Fri, 15 Sep 2000, Edmiston, Jerry wrote:
>
> Recently, I inherited the DNS responsibilities here at work. I've worked
> with DNS before and am familar with the structure and purpose of DNS. But
> some things in this DNS environement are very confusing. Why would a printer
> be defined to DNS?
Names are easier to remember than IP's.
> Why would multiple A records with the same IP number be
> assigned to multiple host names?
Virtual hosting. Putting 300 domains on one IP saves numbers, and me a lot
of work :)
> Why would just about every A record entry
> (and there are alot) have an MX record?
Because the mailserver needs to know who handles mail for that domain /
subdomain. If that domain / subdomain cannot handle mail, no MX entry is
needed. Usual the toplevel domain has a MX record.
> To me these are errors and should be
> corrected. No one will admit to the entries, only pointing to people that
> have long gone, but they keep insisting that they are needed.
They are :)
> Anyway, am I
> missing something or is this truly a cluster of DNS errors. Any help would
> be grealy appreciated. Thanks in advance...
Igmar
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