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Re: [PLUG] home dns notes
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Those of you paying as much attention to my problems as I do may
recall my saying the below quoted text a few days ago.
I thought I'd provide a brief follow-up on why it all fell apart...
It turns out that sendmail really does care a lot about dns
lookups. (Yes, I could have recompiled sendmail with dns off.) Well,
so /etc/hosts wasn't good enough for sendmail, it wanted real dns.
So I caved in and did the internal/external dns thing. Works fine. You
all get to see purple.com external dns. I have an internal version
that resolves local hosts but that also has to know about the external
ones.
The only drawback is that there's no automatic update of the internal
when an external host IP changes. Fortunately, my empire is small and
this is not a big worry.
-Jeff
On Sun, 5 Aug 2001, Jeff Abrahamson wrote:
> The problem is that if I claim authority over purple.com, I can't see
> the outside purple things (www, list). If I claim authority over a
> subdomain, I don't get there, since the lookups are com -->
> purple.com, which doesn't know about home.purple.com subdomain.
>
> So the solution was to use /etc/hosts to declare all my local
> names. My nsswitch.conf of course says "files dns". Then I declare dns
> authority over 0.168.192.in-addr.arpa to get reverse resolution
> working (important for ssh, sshd, and the like--avoiding dns timeouts
> on my lan). And now it appears that all works fine (if I don't poke
> too much with nslookup / dig).
--
Jeff
Jeff Abrahamson <http://www.purple.com/jeff/>
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