diff --git a/src/configure.default b/src/configure.default

index 8b599d2..37a6a00 100644

--- a/src/configure.default

+++ b/src/configure.default

@@ -692,6 +692,12 @@ 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".

@@ -729,6 +735,16 @@ begin transports

 remote_smtp:

   driver = smtp

+# 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