diff --git a/01-setup.sh b/01-setup.sh
index f703f73..82cc249 100755
--- a/01-setup.sh
+++ b/01-setup.sh
@@ -96,11 +96,11 @@ sudo install /dev/stdin /usr/local/bin/downtime-check >/dev/null <<MAILSERVER
 #!/usr/bin/env bash
 if ping -q -c 1 -W 15 1.1.1.1 >/dev/null && ping -q -c 1 -W 15 google.com >/dev/null
 then
-    if [[ \$(ssh ${domain} docker container inspect -f '{{.State.Running}}' myvemail) == true ]]
+    if [[ \$(ssh mail.${_subdomain} docker container inspect -f '{{.State.Running}}' myvemail) == true ]]
     then
         exit 0
     else
-        echo "${domain} was inaccessible on \$(date)" >>$(pwd)/data/log/downtime
+        echo "mail.${_subdomain} was inaccessible on \$(date)" >>$(pwd)/data/log/downtime
         exit 1
     fi
 else