What is causing Sonicwall TZ-170 to intermittently drop HTTP and HTTPS connections to OWA and Remote Access? It was working fine for months, then 6 days ago it started to drop any remote web access. The problem is intermittent. Things will work fine for 10 or 20 minutes, then drop again and stay down for over an hour at at times. Access to OWA and Remote Web Workplace work fine if we access from internally, by using the servername/exchange or servername/remote. My boss thinks it's our Sonicwall hardware just starting to flake out. Could any of the settings be causing such intermittent issues?
Our system: SBS 2003 running Exchange 2003 and IIS6 behind a Sonicwall TZ-170