Yes, it is called "Silent Post". In your Authorize.net control panel, you can set a Silent Post URL, and every time a transaction processes through Authorize.net, you will get a post to that URL. You should start by logging $_POST (if using PHP) to a file and sending through a transaction in live mode, so you can see what the fields look like when they come through. For instance, here's a Silent Post page I use to record just my Authorize.net ARB transactions, you'll need to change it some if you want to record all transactions.
<?php
// My database connection and query functions are here
require_once($_SERVER['DOCUMENT_ROOT'] . '/library/mysql.php');
$logfile = "{$_SERVER['DOCUMENT_ROOT']}/logs/callback.txt";
$handle = fopen($logfile, 'a');
// Eliminate fields you don't want to log
foreach (array('x_method', 'x_account_number', 'x_phone', 'x_fax', 'x_email', 'x_invoice_num', 'x_type', 'x_ship_to_first_name', 'x_ship_to_last_name', 'x_ship_to_company', 'x_ship_to_address', 'x_ship_to_city', 'x_ship_to_state', 'x_ship_to_zip', 'x_ship_to_country', 'x_tax', 'x_duty', 'x_freight', 'x_tax_exempt', 'x_po_num', 'x_cvv2_resp_code', 'x_cavv_response', 'x_test_request') as $key)
unset($_POST[$key]);
fwrite($handle, print_r($_POST, true));
// --------------------------------------------
// Only transactions with a response code of 1 completed
// Only my ARB subscriptions have a customer ID attached
if ($_POST['x_response_code'] == 1 && $_POST['x_cust_id']) {
if (!$link = db_connect()) {
fwrite($handle, "Unable to connect to database.\n");
exit;
}
// Log payment entry in database
$query = queryMysql("
INSERT INTO payments SET company = {company}, payment = {payment}, type = 'MONTHLY', paid = NOW()",
array(
company => $_POST['x_cust_id'],
payment => $_POST['x_amount']
));
if (!$result = mysql_query($query, $link))
fwrite($handle, "ERROR: Unable to add payment record to database.\n");
else
fwrite($handle, "Payment record added to database.\n");
$query = queryMysql("
UPDATE companies SET payment_due = payment_due + INTERVAL 1 MONTH WHERE idn = {company}",
array(
company => $_POST['x_cust_id']
));
if (!$result = mysql_query($query, $link))
fwrite($handle, "ERROR: Unable to update company expiration date.\n");
else
fwrite($handle, "Company expiration date updated.\n");
}
else fwrite($handle, "ERROR: Bad response code and/or missing customer ID.\n");
// So I can see if it works without syntax errors when I call it myself
print 'Ran';
?>
