A mail delivery puzzle

[nmeyers at javalinux.net (Nathan Meyers)]

On Thu, Sep 19, 2002 at 10:31:36AM -0400, Bill Horne wrote:
> > ----- Original Message -----
> > From: "Nathan Meyers" <nmeyers at javalinux.net>
> > To: <billhorne at attbi.com>
> > Cc: <discuss at blu.org>
> > Sent: Thursday, September 19, 2002 8:26 AM
> > Subject: Re: A mail delivery puzzle
> >
> >
> > >
> > > I'm finding the records now. DNS records take time to propagate - you're
> > > waiting for a lot of buffers across the Internet to flush in the right
> > > order. When did you publish these records?
> 
> You're right, it was a propagation issue. It's fixed now, but I'm very
> confused: why would attbi.com cache something like ampr.org? I thought
> things like that would be looked up directly from the authoritative server.

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