is reverse dns required? (policy question)
cjosephes at ibsys.com
cjosephes at ibsys.com
Wed Dec 1 20:32:01 UTC 2004
> Just a quick note: it's not a BCP yet, but it's also considered
> /extremely/ friendly by mail admins and others, if you use a naming
> convention for your rDNS that is easily placed into access.db
> and other
> "right-anchored" string matching mechanisms. e.g., if you have a
> dynamically assigned DSL range, and want to assign rDNS to it based on
> the IP,
>
> 123-45-67-89.dsl.dyn.example.net
>
> is a lot easier to block via rudimentary mechanisms than
>
> dsl-dyn-123-45-67-89.example.net
>
The bulkzone program will easily create right-anchored forward and reverse
zonefiles for any size network block.
http://backpan.cpan.org/authors/id/C/CH/CHRISJ/bulkzone.pl
Just run it twice, and you've got it covered.
On the bigger question of "charging" for reverse DNS: I would consider it
part of the initial setup, or a deferred process tied to the initial setup.
But if a customer swamps you with changes or updates beyond a reasonable
amount, I'd consider delegating the reverse zone, or charging based on the
number of changes.
Just my 2 cents.
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