[Exim] Log message rcpt

I have exim 4.32 + exiscam (the one provided by Debian). In my data
check acl I deny either malware mails or spam mails.

But know I need to give some statictics to my box, the top spam target
accounts.

Due to the fact that exim deny the 'bad messages' at DATA time. The list
of RCPT isn't loggued, only is loggued the origin and the rejection
cause.

How can I grab, even in case of DATA acl deny, the list of issues rcpt
to log them ?

Regards
mike