[exim] Reporting password-protected attachments (Sophie)

Exim version 4.63 (Debian Etch)

We're using Sophie for virus-checking incoming mail. Occasionally a
password-protected ZIP attachment arrives, which is detected by Sophos
(/var/log/mail.log reports "Error: File was encrypted"). However, all we
get in the Exim log is "malware acl condition: sophie reported error".

Is it possible for Exim to be able to report that the file was encrypted?

Thanks,
Keith