diff --git a/config.sample/badmailfrom b/config.sample/badmailfrom
new file mode 100644
index 0000000..61114a0
--- /dev/null
+++ b/config.sample/badmailfrom
@@ -0,0 +1,5 @@
+# This is a sample config file for badmailfrom
+# - single email address
+badmailexample@microsoft.com
+# - block and entire host, and provide a custom reason
+@www.yahoo.com  yahoo never sends from www
\ No newline at end of file