I was taught to deliver packages the way I'd want them delivered to me, usually the front porch or the mailbox. (That is if i can find the mailbox. They're not always in front of the house.) The other day it was so windy that I was placing them in a screen door or partially under the doormat, to keep them from blowing away. If you are having problems, then call the local postmaster. He/She might be a jerk and not give a flip, but they could be a good person who doesn't know this is happening until you tell them.