difficulty with MS and drweb

[Voskresenskiy Evgeniy]

I installed MS (4.28.6), DrWeb (4.31.2). MailScanner misses viruses in arj,
rar archives. From zip-archives it finds viruses. I see, that MS assorts the
letter and creates the catalogue containing archive with a virus and a file
with the text of the letter. At manual start ' drweb-wrapper/opt/drweb
this-path ' I see, that viruses in archive are. Thus ClamAv with these
archives works perfectly. In what there can be a problem?

Voskresenskiy Evgeniy