Command Line scanner NOT catching viruses in .zip attachments for email

I use the command line scanner (aswcmd.exe) in my email program with the following parameters:

/c /i /p /s /t=a “%s”

It is not catching viruses contained in .zip attachments, but when I run the regular application it finds them. Is there an issue with this or are my parameters not correct?

Any input would help!

I am currently running the latest release of Avast Server Edition 4.8

Thanks!!!

Try adding another parameter - /a