[dns-operations] simple measurement

[Randy Bush]

i run a couple of small auth servers.  i measure nothing <blush> other
than checking query rates occasionally.  i should measure some simple
things such as high zone use, hi A/MX use and failure.  what simple
tools/hacks are out there?  i might prefer a simple daily report in
email, as i have for monitoring a whole bunch of non-dns servers.  but i
am open to other ideas.

randy