I have started receiving the following error message on every received email:
Unable to determine the filepath given the file descriptor
FreeBSD 13.1, Postfix, clamav-milter, clamd
clamav-1.0.1,1
As a result the test virus is not detected, but the email gets a X-Virus-Status: Clean header added. I can't find any description of this error anywhere. How can I figure out what the problem is?