diff --git a/applications/email.nix b/applications/email.nix
index 008828e..182c280 100644
--- a/applications/email.nix
+++ b/applications/email.nix
@@ -299,7 +299,7 @@ in {
       {
         record = "${cfg.domain}.";
         r_type = "TXT";
-        value = ''"v=spf1 include:${cfg.sub}.${cfg.domain} include:${cfg.domain} ip4:${config.services.skynet.host.ip} -all"'';
+        value = ''"v=spf1 a:${cfg.sub}.${cfg.domain} ip4:${config.services.skynet.host.ip} -all"'';
       }
 
       # DKIM keys