diff --git a/vaultwarden/compose.yml b/vaultwarden/compose.yml
index f99393a..bca5537 100755
--- a/vaultwarden/compose.yml
+++ b/vaultwarden/compose.yml
@@ -14,7 +14,7 @@ services:
       - SIGNUPS_ALLOWED=false
       - SIGNUPS_VERIFY=false
       - SMTP_PORT=587
-      - SMTP_SECURITY=tls
+      - SMTP_SECURITY=starttls
     networks:
       - reverseproxy
     ports: