example-config: Added a warning about mail_attachment* being experimental.

diff --git a/doc/example-config/conf.d/10-mail.conf b/doc/example-config/conf.d/10-mail.conf
index e13820e4b4d4147cd7495e41bb2584e3e138ae34..fe5cc31e9403a3e2d3bdc4e07a41bf92fe466d94 100644 (file)
--- a/doc/example-config/conf.d/10-mail.conf
+++ b/doc/example-config/conf.d/10-mail.conf
@@ -324,6 +324,8 @@
 # also allows single instance storage for them. Other backends don't support
 # this for now.
 
+# WARNING: This feature hasn't been tested much yet. Use at your own risk.
+
 # Directory root where to store mail attachments. Disabled, if empty.
 #mail_attachment_dir =