[Exim] NOTIFY=

Hi all,

i've changed our MTAs from sendmail to exim.

Our users told me that they don't receive delivery notification.

After investigating a little i've seen that exim, during SMTP dialogue,
does'n accept NOTIFY=SUCCESS,DELAY after RCPT TO: command.

How can i solve this problem? This is very important for me because all my
users (300 circa) use this function.

Thanks