Caveat: my PERL is _terrible_. http://www.smtps.net/pub/dns-amp-watch.pl
This assumes you're using BIND. My logs roll on the hour, so I run it from cron at 1 minute before the hour. Depending on how long it takes to process your logs, you might need to tweak.
-- bk CA cert: http://www.smtps.net/pub/smtps-dot-net-ca-2.pem
smime.p7s
Description: S/MIME cryptographic signature
