[exim] viruses

What should I write in acl_check_data to don't deliver messages with viruses and notify sender?

What I wrote:
    deny       message         = Virus found \
       znaleziono wirusa :$malware_name
      malware                = *

    deny       message         = Pliki z rozszerzeniem $found_extension \
        nie s\xb1 tutaj mile widziane
       demime = com:vbs:bat:pif:scr


or
  deny    malware    = *
          message    = This message contains a virus ($malware_name).

I receive errors and second question
What and where should I write to check if messages thats local delivery will be checked for viruses and spam?

I uncommend av_scanner and write right socket
I use exim 4-63

Thanks.
Rafał