bypass clamav scan if it is down

[Kania Ralf]

Hello Damian,

thanks for that. Have now insert the row.

regards
Ralf

Am 01.11.2020 um 20:41 schrieb Damian:
>> If Clamav is down, in all mails I got the message "UNCKECKED". I don't 
>> want this behaviour.
> 
> Put "['fake scanner', sub {0}]" into @av_scanners_backup.