Why am i getting "Payer Address Status: unconfirmed" on Paypal payment?

Question

on each payment done with Paypal on Magento 1.8.0. i am getting Payer Address Status: unconfirmed on the Order details.

I think this is the main reason why i'm getting the Suspected Fraud status on each order too.

Any hint on why this is happening and why am i getting that the address status is unconfirmed? Thanks.

Edit: here is a transaction taken from the payment_paypal_standard.log i have just edited some values and changed it with * * variable_name * * for privacy reasons. If the variable has the same name in [request] and [ipn] means that their value is the same..for example * * magento_payer_email * * and * * paypal_payer_email * * are different.

2014-09-26T12:53:12+00:00 DEBUG (7): Array
(
    [request] => Array
        (
            [business] => ****
            [invoice] => 200000025
            [currency_code] => EUR
            [paymentaction] => sale
            [return] => https://5.144.161.214/it/paypal/standard/success/
            [cancel_return] => https://5.144.161.214/it/paypal/standard/cancel/
            [notify_url] => http://5.144.161.214/it/paypal/ipn/
            [bn] => Varien_Cart_WPS_US
            [item_name] => Artiglass
            [lc] => it_IT
            [charset] => utf-8
            [amount] => 1.00
            [tax] => 0.22
            [shipping] => 0.00
            [discount_amount] => 0.00
            [cmd] => _ext-enter
            [redirect_cmd] => _xclick
            [city] => ***city***
            [country] => IT
            [email] => ***magento_payer_email***
            [first_name] => yari
            [last_name] => ***surname***
            [zip] => 35036
            [state] => PD
            [address1] => ***address***
            [address2] => 
            [address_override] => 1
        )

    [__pid] => 8869
)

2014-09-26T12:54:13+00:00 DEBUG (7): Array
(
    [ipn] => Array
        (
            [address_city] => ***city***
            [address_country] => Italy
            [address_country_code] => IT
            [address_name] => yari ***surname***
            [address_state] => PD
            [address_status] => unconfirmed
            [address_street] => ***address***
            [address_zip] => 35036
            [business] => ***payment_reciever_email***
            [charset] => windows-1252
            [custom] => 
            [first_name] => Alessandro
            [handling_amount] => 0.00
            [invoice] => 200000025
            [ipn_track_id] => abeeab0b3ee4f
            [item_name] => Artiglass
            [item_number] => 
            [last_name] => ***paypal_payer_surname***
            [mc_currency] => EUR
            [mc_fee] => 0.39
            [mc_gross] => 1.22
            [notify_version] => 3.8
            [payer_email] => ***paypal_payer_email***
            [payer_id] => BUJ7BXSXRQ7PU
            [payer_status] => verified
            [payment_date] => 05:53:41 Sep 26, 2014 PDT
            [payment_fee] => 
            [payment_gross] => 
            [payment_status] => Completed
            [payment_type] => instant
            [protection_eligibility] => Eligible
            [quantity] => 1
            [receiver_email] => ***payment_reciever_email***
            [receiver_id] => C7TREZME4WYUA
            [residence_country] => IT
            [shipping] => 0.00
            [tax] => 0.00
            [transaction_subject] => 
            [txn_id] => 78772277D7485002W
            [txn_type] => web_accept
            [verify_sign] => APioMws2wuxbSdpVCGS5l5doAkp1AWHOvHSThPaCCSoI0oDj9cp0j..H
        )

    [postback_to] => https://www.paypal.com/cgi-bin/webscr
    [__pid] => 8872
)

Answer 1

for magento 1.9.0.1 comment in: public function registerCaptureNotification($amount, $skipFraudDetection = false), code line:

} else {
           // if (!$skipFraudDetection || !$isSameCurrency) {
            //    $this->setIsFraudDetected(true);
           //  }
            $this->_updateTotals(array('base_amount_paid_online' => $amount));
        }

Answer 2

PayPal documentation states: An address is confirmed if the buyer’s credit card billing address matches his or her shipping address. In some instances, PayPal can also confirm an address by examining the buyer’s PayPal account history.

There are additional ways to get "confirmed" address, see details Shipping to a Buyer’s Confirmed Address article on PayPal site