diff --git a/src/configure.default b/src/configure.default
index 69e0ed1..6db4947 100644
--- a/src/configure.default
+++ b/src/configure.default
@@ -901,6 +901,16 @@ address_reply:
   driver = autoreply
 
 
+# This transport is used to deliver local mail to cyrus IMAP server via UNIX
+# socket. You'll need to configure the 'localuser' router above to use it.
+#
+#lmtp_delivery:
+#  home_directory = /var/spool/imap
+#  driver = lmtp
+#  command = "/usr/lib/cyrus-imapd/deliver -l"
+#  batch_max = 20
+#  user = cyrus
+
 
 ######################################################################
 #                      RETRY CONFIGURATION                           #