diff --git a/src/configure.default b/src/configure.default
index 374c51d..e4ca5b9 100644
--- a/src/configure.default
+++ b/src/configure.default
@@ -730,6 +730,12 @@ userforward:
   pipe_transport = address_pipe
   reply_transport = address_reply
 
+procmail:
+  driver = accept
+  check_local_user
+  require_files = ${local_part}:+${home}/.procmailrc:/usr/bin/procmail
+  transport = procmail
+  no_verify
 
 # This router matches local user mailboxes. If the router fails, the error
 # message is "Unknown user".
@@ -771,6 +777,16 @@ remote_smtp:
   driver = smtp
   message_size_limit = ${if > {$max_received_linelength}{998} {1}{0}}
 
+# This transport invokes procmail to deliver mail
+procmail:
+  driver = pipe
+  command = "/usr/bin/procmail -d $local_part"
+  return_path_add
+  delivery_date_add
+  envelope_to_add
+  user = $local_part
+  initgroups
+  return_output
 
 # This transport is used for local delivery to user mailboxes in traditional
 # BSD mailbox format. By default it will be run under the uid and gid of the