diff --git a/nixbld-etc-nixos/configuration.nix b/nixbld-etc-nixos/configuration.nix
index 10504f1b..6b1a5af2 100644
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@@ -1185,6 +1185,7 @@ in
     enablePop3 = true;
     enablePop3Ssl = true;
     certificateScheme = "acme-nginx";
+    policydSPFExtraConfig = "skip_addresses = 5.78.86.156,2a01:4ff:1f0:83de::1";
   } // (import /etc/nixos/secret/email_settings.nix);
   services.roundcube = {
     enable = true;