I recently installed ZAP 6.5.714 and discovered it always blocks all outgoing mail from Thunderbird 1.5.0.4 when outgoing mailsafe protection is enabled. I also have ZAP 6.5.714 on my other computer and it works ok withOutlook Express. What's wrong?

Operating System:Windows XP Home Edition
Product Name:ZoneAlarm Pro
Software Version:6.5