Safe sender list aggregation in Exchange 2007

Every once in a while, I get something wrong. Really wrong. Since the first time I read about per-user "safe sender" lists residing on the Exchange 2007 Edge Transport server (or the Hub Transport server if you have the anti-spam agents installed there), I *assumed* that it included block lists also. After some testing, though, I wondered why the per user "blocked sender" lists were not working.

The feature is just "safe senders"; safe sender list aggregation does not include the user's blocked senders. As Microsoft's Ross Smith pointed out to me, that is why it is called "safe sender list aggregation." :-)