Nope. All you can do is to put in your description that you will not ship to unconfirmed address(in capitals). Better to state it more than once because so many people are inattentive to those details.
I ship to unconfirmed addresses with delivery confirmation, no problems so far.
I dont have a confirmed address, not sure why. But i have purchased off ebay and they just send the item with signature required that way you cant file a claim saying you didnt get it.
But that doesn't prevent you from starting a credit card charge back which is separate from ebay. And sellers who shipped to unconfirmed addresses will not qualify for paypal's seller protection policy if a cc chargeback occurs.
Is it possible to find out if someone has confirmed address before the auction is over (so that I can just cancel the bids)?