Docs: add note on DKIM vs. tpt modifying headers

[exim.git] / src / OS / unsupported / os.c-cygwin

diff --git a/src/OS/unsupported/os.c-cygwin b/src/OS/unsupported/os.c-cygwin
index 5ca05a8db0aea59d3c3acbbc479b19f86a694181..56085b8575c7a43704f6b7af9e3af0a86b5c6ff8 100644 (file)
--- a/src/OS/unsupported/os.c-cygwin
+++ b/src/OS/unsupported/os.c-cygwin
@@ -1,6 +1,7 @@
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* Cygwin-specific code. December 2002. Updated Jan 2015.
    This is prefixed to the src/os.c file.