How to know when FullAcces were applied at a mailbox (the date) ?

Hello all,


I'm trying to find the date when was applied the FullAcces permissions to a mailbox.
Can I get this information by shell?

For example:

Some day ago, User A asks for Full Acces to mailbox B, and these permissions were correctly applied.

Now, what we need to know is the date when these permissions were applied.

It's possible to know this date?



Thanks in advance