MAVP-731 — ClamAV antivirus response invalid
The protocol used by the ClamAV antivirus expects sending a PORT command with additional communication channel parameters.
This expectation was not fulfilled, the antivirus module cannot continue in communication with the engine and the antivirus check fails.
Check the antivirus channel settings in the Kernun configuration, the configuration of the ClamAV engine and the communication itself using proper tool (e.g. tcpdump).