Vacant property being rehabbed keeps receiving lots of mail.

[Jonathan Plant]

I bought a vacant property that is being rehabbed and it keeps getting a lot of mail every day.  They are addressed to many different people not noticeably related by name.  I’ve held the mail for 30 days through the USPS and selected for me to pick it up after that.  The USPS will "Return to Sender" if not picked up by a certain amount of days.  I am going to start another hold mail for another 30 days but was wondering if anyone knew of a method I can use to stop all this mail from arriving. Thanks.