diff --git a/home-modules/email.nix b/home-modules/email.nix
index ee8e666..f25038b 100755
--- a/home-modules/email.nix
+++ b/home-modules/email.nix
@@ -111,8 +111,9 @@ lib.mkIf (host != "NxACE")
         host = "xc.hs-mittweida.de";
       };
       smtp = {
-        port = 465;
+        port = 587;
         host = "xc.hs-mittweida.de";
+        tls.useStartTls = true;
       };
       signature = {
         text = ''