function email_check($email) {
if (!eregi("^[a-z0-9]+([\.%!][_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*$", $email)) {
$return = false;
} else {
list($user, $host) = explode("@", $email);
if (checkdnsrr($host, "MX") or checkdnsrr($host, "A")) {
$return = true;
} else {
$return = false;
}
}
return $return;
}


ÀÚ·áÃâó : http://www.tegi.org