[exim] Clamd: ClamAV returned /var/spool/exim4/scan (that ol…

So I'm getting that old clamd error that looks like a permissions
error...(but the common fixes don't fix)

2005-11-04 17:19:50 1EYBmf-0003uM-Am malware acl condition: clamd:
ClamAV returned /var/spool/exim4/scan/1EYBmf-0003uM-Am: Access denied.
ERROR

I've looked around for a fix, and done the following...
-ensured clamav user is in the Debian-exim group (standard first step
for this problem)
-chmod'd recursively on the directory in question and added write
access recursively for the group
-found something about AllowSupplementary groups in the clamav.conf, did that
-after all changes i've restarted the services

This in om a newer Debian install, exim 4.52, sa-exim, ummmm, not sure
what else is relevant.

Thanks for any ideas,
Andre