procmail: Program failure (73)

Hi, I have a problem with emails from just one domain of my virtualmin. I tried creating a new account but the same thing happens.

The log says: Time: 1565198852 From: juan@dominio.com.ar To: contacto@domain.com.ar User: contacto-domain.com.ar Size: 3556 Dest: / dev / null Mode: None sh: 1: / usr / bin / clamscan: not found Disk quota for domain has been reached. procmail: Program failure (73) of "/etc/webmin/virtual-server/lookup-domain.pl" From juan@dominio.com.ar Wed Aug 7 17:27:42 2019 Subject: sss Folder: / dev / null

When sending an email to any of those accounts the bounce is:

I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can delete your own text from the attached returned message.

               The mail system

<amigxsdelasmadres@domain1> (expanded from <amigxsdelasmadres@domain1>): can't create user output file