How do I allow P.O. box delivery in my listing?

[paulamom31]

How do I allow Post Office delivery in my listing? I've searched my listing and I'm not seeing anything stating whether it allows it or not. thanks

[karl*katz]

You have your listings set up properly.

By default PO Boxes are allowed you didn't exclude PO Boxes therefor they are allowed.

[reallynicestamps]

Since PO boxes are among the most secure addresses to ship to, this is just a silly question, but can a seller refuse accept bids from members with PO boxes?

I know the reason for refusal is that the seller is using a courier to ship and couriers cannot deliver to PO boxes because the postal workers will not sign for the parcels.

Same with military and diplomatic boxes (MPO, APO and Box 500, Ottawa). Can a seller refuse bids from members with such addresses?