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: To: User: 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/”
From 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

Disk quota for domain has been reached

So did you check the quotas of server and users?

Yes and change it to unlimited.