diff --git a/domains/lighty.json b/domains/lighty.json
index 55c01915f..f452664b7 100644
--- a/domains/lighty.json
+++ b/domains/lighty.json
@@ -15,6 +15,9 @@
     "MX": [
       "mx1.improvmx.com",
       "mx2.improvmx.com"
+    ],
+    "TXT": [
+      "v=spf1 include:spf.improvemx.com -all"
     ]
   }
 }