Delivery testing?

[meburke at rocomai.com]

cPanel uses exim as an MTA and includes MailScanner. exim includes a debug
option to emulate delivery of mail from address to another by the command:

exim -f sender at domain.ext -bt recipient at domain.ext

but I get the result:

recipient at domain.ext annot be resolved at this time:
  All deliveries are handled by MailScanner

Does anyone know of a way to verify that the mail is successfully passed for
scanning, and also that the mail is queued for delivery properly after
scanning?

Ideally, I'd like to trace the message from composition to delivery.

Thanks,

Mike Burke