diff --git a/net/compose.yaml b/net/compose.yaml
index 05cac49..9386a79 100644
--- a/net/compose.yaml
+++ b/net/compose.yaml
@@ -240,7 +240,6 @@ services:
       MP_SMTP_RELAY_USER: ${EMAIL_SMTP_USER}
       MP_SMTP_RELAY_PASS: ${EMAIL_SMTP_PASSWORD}
       MP_SMTP_RELAY_AUTH: plain
-      MP_SMTP_RELAY_STARTTLS: "true"
     volumes:
       - mailpit_data:/data
     networks: