version 1

tools/add_mail_domain.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+set -euo pipefail
+
+DOMAIN="$1"
+
+if [[ -z "$DOMAIN" ]]; then
+    echo "Usage: $0 <domain>"
+    exit 1
+fi
+
+echo "=============================================="
+echo " ADDING MAIL DOMAIN: $DOMAIN"
+echo "=============================================="
+echo ""
+
+MAILSERVER_CONTAINER="mailserver"
+
+#
+# STEP 1: create dummy mailbox — required to register domain internally
+#
+echo "[1/3] Creating domain presence via dummy account ..."
+docker exec "$MAILSERVER_CONTAINER" setup email add "dms-domain-init@$DOMAIN" "Init12345" >/dev/null 2>&1 || true
+
+#
+# STEP 2: generate DKIM key
+#
+echo "[2/3] Generating DKIM key ..."
+docker exec "$MAILSERVER_CONTAINER" setup config dkim keysize 2048 domain "$DOMAIN"
+
+#
+# STEP 3: extract DKIM public key (to show user DNS record)
+#
+echo "[3/3] Extracting DKIM public key ..."
+PUBKEY=$(docker exec "$MAILSERVER_CONTAINER" sh -c \
+  "cat /tmp/docker-mailserver/opendkim/keys/$DOMAIN/mail.txt" 2>/dev/null)
+
+if [[ -z "$PUBKEY" ]]; then
+    echo "ERROR: Could not read DKIM key!"
+    exit 1
+fi
+
+echo ""
+echo "=============================================="
+echo " DNS RECORDS TO ADD FOR: $DOMAIN"
+echo "=============================================="
+echo ""
+echo "1) MX record:"
+echo "   $DOMAIN.     50   mail.knusperkerne.de."
+echo ""
+echo "2) SPF record:"
+echo "   $DOMAIN.     TXT  \"v=spf1 mx a:mailsystem.knusperkerne.de ip4:89.58.2.51 -all\""
+echo ""
+echo "3) DKIM record (selector: mail):"
+echo ""
+echo "$PUBKEY"
+echo ""
+echo "4) DMARC record:"
+echo "   _dmarc.$DOMAIN.   TXT   \"v=DMARC1; p=quarantine; rua=mailto:postmaster@$DOMAIN\""
+echo ""
+echo "=============================================="
+echo " Domain setup completed."
+echo "=============================================="
+echo ""