diff --git a/docker-compose.yaml b/docker-compose.yaml
index 6687f5b..68fe8b2 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -25,7 +25,7 @@ services:
       - SHOW_PASSWORD_HINT=true
       - SMTP_HOST=mail.smtp2go.com
       - SMTP_FROM=vault@speerfam.net
-      - SMTP_PORT=587
+      - SMTP_PORT=2525
       - SMTP_SECURITY=starttls
       - SMTP_USERNAME=vault.speerfam
       - SMTP_PASSWORD=wsL27oYEvfB7fa2T