ClamAV "Can't download daily.cvd from database.clamav.net" on macOS Server 5.6.3 / High Sierra
My macOS Server 5.6.3 default anti virus filter ClamAV are repeating,
ClamAV update process started at xxx xxx xx xx:xx:xx xxxx
main.cld is up to date (version: 59, sigs: 4564902, f-level: 60, builder: sigmgr)
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: getpatch: Can't download daily-26096.cdiff from database.clamav.net
ERROR: getpatch: Can't download daily-26096.cdiff from database.clamav.net
ERROR: getpatch: Can't download daily-26096.cdiff from database.clamav.net
WARNING: Incremental update failed, trying to download daily.cvd
WARNING: Incremental update failed, trying to download daily.cvd
ERROR: Can't download daily.cvd from database.clamav.net
ERROR: Can't download daily.cvd from database.clamav.net
Giving up on database.clamav.net...
Update failed. Your network may be down or none of the mirrors listed in /Library/Server/Mail/Config/clamav/freshclam.conf is working. Check http://www.clamav.net/doc/mirrors-faq.html for possible reasons.
Does anybody have any idea?
Mac mini, macOS 10.13