Hi,
Jun 8 21:20:03 mail02 postfix[22018]: Postfix is running with backwards-compatible default settingsMeaning the compatibility level is not set the requisuite minimum value. This applies whether or not the relevant parameters have been explicitly set.
Okay, I think I understand now. I interpreted this message as an indication there were still variables set to defaults from older versions.
I'll update the compatibility_level variable. Thanks again, Alex