AFAIC there are several places where whitelist-entries can be made:
1)

2)

3)

So, now my question is what is the difference between these three options, especially for 1) and 2) I have no idea what's the difference how there are used internally.
As far as I understood is 3) user-based. so the entries there are only taken in the recipient matches, right?
Many thanks in advance!
1)

2)

3)

So, now my question is what is the difference between these three options, especially for 1) and 2) I have no idea what's the difference how there are used internally.
As far as I understood is 3) user-based. so the entries there are only taken in the recipient matches, right?
Many thanks in advance!