Our general policy is that we do not cash checks for or sell cashier's checks to non-customers.
We have had situations where someone has deposited a large check into their deposit account and then several days later (after check clears), they will purchase multiple cashier's check in their name or the names of the same group of family members.
The tellers will come to an officer for approval on the sale of the cashier's checks and I will, sometimes, file a SAR. While I can understand that some folks don't trust banks, when I see someone doing this or repeatedly taking money out of or putting money into a cashier's check my concern is that they may be 'sheltering' the money so that they or members of their family can collect government benefits.
Just my opinion.
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I hear and I forget. I see and I remember. I do and I understand.--Confucius