diff --git a/http-server/Abstracts/Callback.php b/http-server/Abstracts/Callback.php
index 925205e8..f2cd4221 100644
--- a/http-server/Abstracts/Callback.php
+++ b/http-server/Abstracts/Callback.php
@@ -96,7 +96,7 @@ abstract class Callback extends Application
 		$mail->SMTPAuth = true;                                                           // Enable SMTP authentication
 		$mail->Username = Config::get('email.username');                                  // SMTP username
 		$mail->Password = Config::get('email.password');                                  // SMTP password
-		$mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;                               // Enable TLS encryption; `PHPMailer::ENCRYPTION_SMTPS` encouraged
+		$mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;                               // Enable TLS encryption; `PHPMailer::ENCRYPTION_SMTPS` encouraged
 		$mail->Port = Config::get('email.port');                                          // TCP port to connect to, use 465 for `PHPMailer::ENCRYPTION_SMTPS` above
 		$mail->setFrom(Config::get('email.send.address'), Config::get('email.send.nickname'));
 		return $mail;
diff --git a/http-server/Events/OnShutdown.php b/http-server/Events/OnShutdown.php
index 67e244c7..3b10f124 100644
--- a/http-server/Events/OnShutdown.php
+++ b/http-server/Events/OnShutdown.php
@@ -32,7 +32,7 @@ class OnShutdown extends Callback
 	 */
 	public function onHandler(Server $server)
 	{
-//		$this->system_mail('server shutdown~');
+		$this->system_mail('server shutdown~');
 		$event = Snowflake::get()->getEvent();
 		if (!$event->exists(Event::SERVER_SHUTDOWN)) {
 			return;
diff --git a/http-server/Events/OnWorkerError.php b/http-server/Events/OnWorkerError.php
index 1a8a2236..e85d9ddf 100644
--- a/http-server/Events/OnWorkerError.php
+++ b/http-server/Events/OnWorkerError.php
@@ -27,12 +27,12 @@ class OnWorkerError extends Callback
 		if (!Config::has('email')) {
 			return;
 		}
-//		$this->system_mail(print_r([
-//			'$worker_pid' => $worker_pid,
-//			'$worker_id'  => $worker_id,
-//			'$exit_code'  => $exit_code,
-//			'$signal'     => $signal,
-//		], true));
+		$this->system_mail(print_r([
+			'$worker_pid' => $worker_pid,
+			'$worker_id'  => $worker_id,
+			'$exit_code'  => $exit_code,
+			'$signal'     => $signal,
+		], true));
 	}
 
 }
diff --git a/system/Process/ServerInotify.php b/system/Process/ServerInotify.php
index 1df07a92..5857b96e 100644
--- a/system/Process/ServerInotify.php
+++ b/system/Process/ServerInotify.php
@@ -61,8 +61,6 @@ class ServerInotify extends Process
 	 */
 	public function tick()
 	{
-		$this->debug('file modify listener.');
-
 		$this->loadByDir(APP_PATH . 'app', true);
 	}