1 files changed, 1 insertions, 1 deletions

diff --git a/ymir.nix b/ymir.nix
index 0f32b998..d96a3010 100644
--- a/ymir.nix
+++ b/ymir.nix
@@ -421,7 +421,7 @@ in rec {
         permit_mynetworks,
         permit_sasl_authenticated,
         reject_unauth_destination,
-        check_sender_mx_access regex:${pkgs.writeText "spfpolicy" ''
+        check_sender_mx_access regexp:${pkgs.writeText "spfpolicy" ''
           /(^|\.)tu-muenchen\.de$/ DUNNO
           /(^|\.)tum\.de$/ DUNNO
           /(^|\.)lmu\.de$/ DUNNO