diff --git a/machines/pretalx/configuration.nix b/machines/pretalx/configuration.nix
index ae5eba2..6ef5c8c 100644
--- a/machines/pretalx/configuration.nix
+++ b/machines/pretalx/configuration.nix
@@ -82,9 +82,10 @@ in
       };
       mail = {
         from = "malobot@systemli.org";
+        user = "malobot@systemli.org";
         host = "mail.systemli.org";
         port = "465";
-        ssl = true;
+        ssl = false;
         tls = true;
       };