mupdate slave & master on the same machine?

[Andrew Morgan]

On Thu, 20 Apr 2006, Patrick Radtke wrote:

> I'm not sure if its to clear from the documentation (or if its in there) but 
> you can also configure lmtpproxyd on each frontend to query the slave 
> mupdate process on the localhost. On a busy system this can reduce the load 
> on the murder master since lmtpproxyd won't be connecting to it for every 
> incoming email message.

How do you do this?  I can't find a manpage for lmtpproxyd on my v2.2.12 
box.

 	Andy