diff --git a/systems/x86_64-linux/prefect/services/mailserver/stalwart/default.nix b/systems/x86_64-linux/prefect/services/mailserver/stalwart/default.nix
index 55154f9f..1b780a49 100644
--- a/systems/x86_64-linux/prefect/services/mailserver/stalwart/default.nix
+++ b/systems/x86_64-linux/prefect/services/mailserver/stalwart/default.nix
@@ -36,6 +36,7 @@ in
       };
       config = {
         local-keys = [
+          "!acme.*.eab.*"
           "acme.*"
           "asn.*"
           "auth.*"