version 1

tools/check_mail_usage.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+#
+# check_mail_usage.sh
+#
+# Checks Maildir usage by executing du inside the Docker-Mailserver container.
+#
+# Usage:
+#   ./check_mail_usage.sh
+#
+
+CONTAINER="mailserver"
+MAILDIR="/var/mail"
+
+echo "Scanning Maildir sizes inside container '$CONTAINER' ..."
+echo
+
+TMPFILE=$(mktemp)
+
+# List <domain>/<user> directories inside container
+docker exec "$CONTAINER" bash -c "
+    find $MAILDIR -mindepth 2 -maxdepth 2 -type d
+" | while read -r DIR; do
+    SIZE_MB=$(docker exec "$CONTAINER" bash -c "du -sm \"$DIR\" | awk '{print \$1}'")
+    USER=$(basename "$DIR")
+    DOMAIN=$(basename "$(dirname "$DIR")")
+    echo \"$SIZE_MB MB  $USER@$DOMAIN\" >> "$TMPFILE"
+done
+
+echo "======================"
+echo "   MAILDIR USAGE"
+echo "======================"
+echo
+
+sort -nr "$TMPFILE" | head -n 10
+
+echo
+echo "----------------------"
+TOTAL=$(docker exec "$CONTAINER" bash -c "du -sm $MAILDIR | awk '{print \$1}'")
+echo "Total mail storage used: $TOTAL MB"
+echo "----------------------"
+
+rm "$TMPFILE"