diff --git a/compose.yaml b/compose.yaml
index 5656fd7..2549458 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -50,7 +50,14 @@ services:
       BACKUP_KEEP_DAYS: 14
       TIMEZONE: 'Europe/Berlin'
       MAIL_SMTP_ENABLE: 'TRUE'
-      MAIL_SMTP_VARIABLES: 'smtp_hostname=live.smtp.mailtrap.io,smtp_port=587,smtp_username=smtp@mailtrap.io,smtp_password=f2149ea35ddb1c5f622f8253550e55e1,from_email=admin@doeringer.eu,from_name=Vaultwarden'
+      MAIL_SMTP_HOST: 'live.smtp.mailtrap.io'
+      MAIL_SMTP_FROM: 'admin@doeringer.eu'
+      MAIL_SMTP_FROM_NAME: 'Vaultwarden Backup'
+      MAIL_SMTP_SECURITY: 'starttls' 
+      MAIL_SMTP_PORT: '587'
+      MAIL_SMTP_USERNAME: 'smtp@mailtrap.io'
+      MAIL_SMTP_PASSWORD: 'f2149ea35ddb1c5f622f8253550e55e1'
+      MAIL_SMTP_AUTH_MECHANISM: 'LOGIN'
       MAIL_TO: 'tobias@doeringer.eu'
       MAIL_WHEN_SUCCESS: 'TRUE'
       MAIL_WHEN_FAILURE: 'TRUE'