diff --git a/backend/src/main/java/de/uni_koeln/arachne/service/MailService.java b/backend/src/main/java/de/uni_koeln/arachne/service/MailService.java
index 2f7664836..5470d8781 100644
--- a/backend/src/main/java/de/uni_koeln/arachne/service/MailService.java
+++ b/backend/src/main/java/de/uni_koeln/arachne/service/MailService.java
@@ -45,7 +45,6 @@ public MailService(final @Value("${mailSMTPServer}") String smtpServer
   		Properties props = new Properties();
 		props.put("mail.smtp.auth", true);
 		props.put("mail.smtp.ssl.enable", true);
-        props.put("mail.debug", "true");
 
 		mailSender.setJavaMailProperties(props);
 		mailSender.setHost(smtpServer);