mail being recived on system to be poped

[absi]

hi all
i have just configured sendmail on Aix for
sending and recieveing to/from exchange server.
It is correctly working..........but now the problem
is that developers are designing a pop client and they
want that mail recieved by o/s users(through sendmail)
will be poped auto into that cleint when the user
logged into mail server.So for this to happen
i also install pop and imapd on same server but confusion on my partnow is no communication existing
by sendmail and pop........pls help me
how can i do that....is there any way of communication
b/w sendmail and pop(same server).
Absi