diff --git a/check.py b/check.py
index eee92b1..a485ed3 100755
--- a/check.py
+++ b/check.py
@@ -106,6 +106,7 @@ running for nemunaire@nemunai.re""")
 
     import smtplib
     with smtplib.SMTP("localhost") as smtp:
+        smtp.starttls()
         if SEND_TO_REALUSER:
             smtp.send_message(msg)
             smtp.send_message(msg, to_addrs=["virli-report@nemunai.re"])