1 files changed, 9 insertions, 0 deletions
diff --git a/modules/persistence/postfix/default.nix b/modules/persistence/postfix/default.nix
new file mode 100644
index 000000000000..19a3961ef578
--- /dev/null
+++ b/modules/persistence/postfix/default.nix
@@ -0,0 +1,9 @@
+{ config, lib, ... }:
+
+{
+  config = lib.mkIf (with config.services.postfix; enable && mapFiles ? sasl_passwd) {
+    systemd.tmpfiles.rules = [
+      "L+ /var/lib/postfix/sasl_passwd - - - - /persist/safe/var/lib/postfix/sasl_passwd"
+    ];
+  };
+}