--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/http_authentication/config.inc.php.dist	Thu Jan 04 15:50:29 2018 -0500
@@ -0,0 +1,9 @@
+<?php
+
+// HTTP Basic Authentication Plugin options
+// ----------------------------------------
+// Default mail host to log-in using user/password from HTTP Authentication.
+// This is useful if the users are free to choose arbitrary mail hosts (or
+// from a list), but have one host they usually want to log into.
+// Unlike $config['default_host'] this must be a string!
+$config['http_authentication_host'] = '';