[exim] Exiscan CLAMAV RAR failure

Is there a way to get rid off, (or fix) the

2005-08-12 18:20:31 XXXXXXXXXXXXXX malware acl condition: clamd: ClamAV
returned /var/spool/exim/scan/XXXXXXXXXXX/XXXXXXXXXXXX: RAR module
failure ERROR

in the exim paniclog. Such that mail will be scanned like zip archieves?


--
Venlig hilsen / Best regards
Lasse Birnbaum Jensen