Forbidden attachment type: PKCS 7 Signature

In order for Avira jobs to be able to process emails, the emails must be fully unpacked. Password- protected archives cannot be unpacked. Therefore, emails with such file attachments are by default blocked as "unscannable" by the virus scan job and are placed in the BADMAIL quarantine.  
To prevent this action, use the job Avira Protected Attachment Detection. This job reacts to emails with password-protected archives and executes the job actions configured in the Actions tab. Password-protected archives can thus be handled in a rule-based way. For example, such emails can be blocked for certain individuals/ groups, but delivered to others.
As the emails would be delivered unscanned in the latter case, the emails need to be scanned by a virus scan job before delivery. The Avira Scanning job therefore marks emails that contain password-protected archives. Due to this marking, a subsequent virus scan job handles these emails as "normal" emails and can ignore processing errors (DENIED) that occur without this job.