Phpmail

para ver se o seu servidor de smtp ta legal um teste com script em php

<?


// ---------------- SEND MAIL FORM ----------------


// send e-mail to ...
$to="banto@localhost";


// Your subject
$subject="Test";


// From
$header="from: your name <your email>";


// Your message
$message="Hello \r\n";
$message.="This is test\r\n";
$message.="Test again ";


// send email
$sentmail = mail($to,$subject,$message,$header);


// if your email succesfully sent
if($sentmail){
echo "Email Has Been Sent .";
}
else {
echo "Cannot Send Email ";
}


?>