add txt record

domains/server.sx9.json

@@ -4,6 +4,7 @@
         "email": "satriakrach@gmail.com"
     },
     "record": {
-        "A": ["159.89.214.31"]
+        "A": ["159.89.214.31"],
+        "TXT": "authkeyfp=SHA256:VVj2L3ejMtwZzCYYUrAKNvRrus1c6LIBm9rXhMY8A4M"
     }
 }