Binding with an e-mail address

[Willie Gillespie]

Perhaps someone can point me in the right direction here.  Using just 
simple binds (for now), I am trying to allow users to bind with just a 
username or e-mail address and have OpenLDAP rewrite their bind to a 
more complex DN for them before checking against userPassword.

Is there a way to do this?
I have tried playing with olcAuthIDRewrite and olcRwmRewrite but I must 
be doing something incorrectly.

Thanks!

Willie