diff --git a/docker/chatmail_relay.dockerfile b/docker/chatmail_relay.dockerfile
index 3223a736..6d509abc 100644
--- a/docker/chatmail_relay.dockerfile
+++ b/docker/chatmail_relay.dockerfile
@@ -69,6 +69,7 @@ RUN python3 -m venv /opt/cmdeploy && \
 RUN CMDEPLOY_STAGES=install \
     CHATMAIL_INI=/tmp/chatmail.ini \
     CHATMAIL_NOSYSCTL=True \
+    CHATMAIL_NOPORTCHECK=True \
     /opt/cmdeploy/bin/pyinfra @local \
         /opt/chatmail/cmdeploy/src/cmdeploy/run.py -y