Add missing license header to smtp/server_test.go.

diff --git a/smtp/server_test.go b/smtp/server_test.go
index 09cb3060f299a8e3c625e4545c0de9e4e483f674..bfb37be503ec42fdc40a9de606eee4dc542c3254 100644 (file)
--- a/smtp/server_test.go
+++ b/smtp/server_test.go
@@ -1,3 +1,9 @@
+// mailpopbox
+// Copyright 2020 Blue Static <https://www.bluestatic.org>
+// This program is free software licensed under the GNU General Public License,
+// version 3.0. The full text of the license can be found in LICENSE.txt.
+// SPDX-License-Identifier: GPL-3.0-only
+
 package smtp
 
 import (