e-mail protocols

[Robert Story]

Our site has unix and DOS systems and an AS/400.  The company now wishes to 
network the lot over Token Ring and provide an internal e-mail service.  Since
the unix side has been linked through uucp for sometime we are quite use to
sending mail our way and in communicating to the outside world this way.

So the question is will we have to give up our system to join in?  Or does the
unix mail system use a common mail protocol?  Does anyone know of a package
available under DOS that will be compatible with the unix system?  Please
e-mail me your responses.  Thanks!
-- 
[ Robert Story  ..uunet!{jtsv16!geac!censor, mnetor!lsuc}!avcocan!bounder  ]
[ SnailMail :   AFS 201 Queens Avenue London Ontario Canada N6G 4M5        ]
[ Voice     :   +1 519 672-4220 xtn 233                                    ]