HAProxy and pop and smtp?

Hello all , my first post to the list... so please be gentle with me.. :)

I would like to know how one would use HAProxy fro pop, smtp and imap if possible.... i currently use it for http with the x-forward option which saved my life with respect to stats, thanks a million for that!

I have been reading and have read how haproxy is a tcp load balancer as opposed just a http one... i would like to know how a config would look for smtp and pop and imap if possible.. I have search for info on this but have not seem anything that can help me with confidence... can someone please direct me me to docs or URLs that might aid me in this? Or does anyone here use smtp pop and imap with haproxy already? One last question if i can use smtp with haproxy, is there a way to forward the originating ip as haproxy does with http, with the x-forward option... Thanks and to all a good day/evening!
:)

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Rob Morin
Dido Internet Inc.
Montreal,Canada
http://www.dido.ca
514-990-4444