Add Mailbux MX and SPF records

domains/yusuufmm.json

@@ -4,6 +4,17 @@
     "email": "yusuf2000mm@gmail.com"
   },
   "records": {
-    "A": ["216.198.79.1"]
+    "A": [
+      "216.198.79.1"
+    ],
+    "MX": [
+      {
+        "target": "my.mailbux.com.",
+        "priority": 10
+      }
+    ],
+    "TXT": [
+      "v=spf1 include:msg25.com ~all"
+    ]
   }
-}
+}