Can our mortgage company require us to go with their insurance company?

We are in the process of trying to refinance with a new mortgage company. We currently have homeowner’s insurance through Farm Bureau Insurance, as well as boat, automobile, and life insurance. The mortgage company we are refinancing with is saying that we must have and escrow account and pay their OWN homeowner’s insurance, instead of Farm Bureau. I don’t want to do this because we get a multi-line discount at Farm Bureau, and I like them. Can they do this?