All,
Sometime ago this list, or the security list, provided a common consensus that www servers hosted inside a firewall, and serving pages to both inside and outside should have resolve www.domain.com to the internal IP for those inside the firewall. This requires a dns record for the domain on the internal dns servers and works like a champ!
It also seems to be causing issues with email sent to the domain from inside the firewall. All mail, sent from inside, is generating an "unroutable address" error.

