[Web] Add a timeout to PHPMailer

[Web] Fix relayhost test with empty username

data/web/inc/ajax/relay_check.php

@@ -23,7 +23,7 @@ if (isset($_SESSION['mailcow_cc_role']) && $_SESSION['mailcow_cc_role'] == "admi
     $password = $relayhost_details['password'];
 
     $mail = new PHPMailer;
-
+    $mail->Timeout = 10;
     $mail->SMTPDebug = 3;
     $mail->Debugoutput = function($str, $level) {
       foreach(preg_split("/((\r?\n)|(\r\n?)|\n)/", $str) as $line){
@@ -57,8 +57,8 @@ if (isset($_SESSION['mailcow_cc_role']) && $_SESSION['mailcow_cc_role'] == "admi
       $mail->SMTPAuth = true;
       $mail->Username = $username;
       $mail->Password = $password;
-      $mail->Port = $port;
     }
+    $mail->Port = $port;
     $mail->setFrom($mail_from, 'Mailer');
     $mail->Subject = 'A subject for a SMTP test';
     $mail->addAddress($RELAY_TO, 'Joe Null');