NOAA Warnings not sending SMTP mail

WD 10.37-55
Davis VP2
Windows XP SP3
NOAA Warnings ver 4.5
wdxmlwarning.exe file version 4.1.0

Not sending SMTP mail at all. When I click the test button, watching the traffic with a network sniffer, still nothing.
When I use the “Warnings & Alerts” applet and hit test, WD sends the e-mail just fine. Weather reports seem to work just fine
it’s only the NOAA warnings which do not.

Any ideas on what to check next.

Update - upgraded to WD 10.37 Build 56 and still have the same problem. Any help would be greatly appreciated.