Update shockbs.json

domains/shockbs.json

@@ -4,6 +4,8 @@
     "email": "apipherng@gmail.com"
   },
   "record": {
-    "A": ["216.24.57.1"]
+    "A": ["216.24.57.1"],
+    "MX": ["mx1.improvmx.com","mx2.improvmx.com."],
+    "TXT": "v=spf1 include:spf.improvmx.com ~all"
   }
 }