A mail delivery puzzle

[bill at horne.net (Bill Horne)]

----- Original Message -----
From: "Nathan Meyers" <nmeyers at javalinux.net>

> All DNS servers cache recent lookups. Attbi might have done a recent
> lookup, or consulted another server that did. It usually takes a couple
> of days for old caches to completely clear out of the network.

Nathan,

I'm still puzzled: this was a new entry, with no previous information. Since
any previous lookups would have failed, what was there to cache?

Bill