diff --git a/domains/mail.zvdxc.json b/domains/mail.zvdxc.json
index e8a7c668c..b0b707c5f 100644
--- a/domains/mail.zvdxc.json
+++ b/domains/mail.zvdxc.json
@@ -9,5 +9,6 @@
       "mx1.improvmx.com",
       "mx2.improvmx.com"
     ]
+    "TXT": "v=spf1 include:spf.improvmx.com ~all"
   }
 }