[Exim] exiscan and clamd

I have clamd set up and running as a daemon.

I have tried on a network port and with a local socket.

My scanning options are as suggested by the spec file:

av_scanner = clamd:127.0.0.1 3310

(or with socket - changed to correspond)

My exim.conf settings are also as suggested:

deny message = This message contains malware ($malware_name)
     demime = *
     malware = *

I get the following error message:

2003-08-21 16:00:30 19pqvO-0004SR-PI malware acl condition: clamd:
ClamAV returned /var/spool/exim/scan/19pqvO-0004SR-PI: Can't access the
file ERROR
2003-08-21 16:00:30 19pqvO-0004SR-PI H=fileserver.harkness.co.uk
(file.harkness.co.uk) [80.234.135.45] F=<root@???>
temporarily rejected after DATA

I have ensured that clamav user can access the scan directory; however
there are no files created within it.

Does anyone have a similar experience or any suggestions to make this work?

Kind regards
Xander