[exim] bcc field

Hi

I have a special alias that deliver the mail to a script to some
special task usint a | pipe in /etc/aliases.

The problem is that when the original email sent to exim via smtp,
have users in the bcc field, Exim don't pass the header Bcc in the
mail to the script.

There is anyway to include the bcc header in the mail that it passed
to the script?

Best regards
marcos