I just checked the status of amavisd:

# systemctl -l status amavisd ● amavisd.service - Amavisd-new is an interface between MTA and content checkers.    Loaded: loaded (/usr/lib/systemd/system/amavisd.service; enabled; vendor preset: disabled)    Active: active (running) since Thu 2019-02-07 08:16:59 EST; 7h ago      Docs: http://www.ijs.si/software/amavisd/#doc   Process: 5715 ExecStart=/usr/sbin/amavisd -c /etc/amavisd/amavisd.conf (code=exited, status=0/SUCCESS)  Main PID: 6327 (/usr/sbin/amavi)    CGroup: /system.slice/amavisd.service            ├─6327 /usr/sbin/amavisd (master)            ├─6336 /usr/sbin/amavisd (virgin child)            └─6337 /usr/sbin/amavisd (virgin child)

Feb 07 08:16:59 klovia.htt-consult.com amavis[6327]: Found decoder for    .lha  at /usr/bin/7z Feb 07 08:16:59 klovia.htt-consult.com amavis[6327]: Found decoder for    .iso  at /usr/bin/7z Feb 07 08:16:59 klovia.htt-consult.com amavis[6327]: Found decoder for    .exe  at /usr/bin/unarj Feb 07 08:16:59 klovia.htt-consult.com amavis[6327]: Using primary internal av scanner code for ClamAV-clamd Feb 07 08:16:59 klovia.htt-consult.com amavis[6327]: Found secondary av scanner ClamAV-clamscan at /usr/bin/clamscan Feb 07 08:16:59 klovia.htt-consult.com amavis[6327]: Deleting db files __db.002,snmp.db,nanny.db,__db.001,__db.003 in /var/spool/amavisd/db Feb 07 08:16:59 klovia.htt-consult.com amavis[6327]: Creating db in /var/spool/amavisd/db/; BerkeleyDB 0.51, libdb 5.3 Feb 07 08:17:00 klovia.htt-consult.com amavis[6327]: initializing Mail::SpamAssassin (0) Feb 07 08:17:08 klovia.htt-consult.com amavis[6327]: SpamControl: init_pre_fork on SpamAssassin done Feb 07 08:17:08 klovia.htt-consult.com amavis[6327]: extra modules loaded after daemonizing/chrooting: /usr/lib/perl5/vendor_perl/auto/Net/SSLeay/autosplit.ix, /usr/lib/perl5/vendor_perl/auto/Net/SSLeay/randomize.al, /usr/share/perl5/Net/libnet.cfg, IO/Socket/SSL.pm, Mail/SpamAssassin/Plugin/FreeMail.pm, Mail/SpamAssassin/Plugin/SpamCop.pm, Net/Cmd.pm, Net/Config.pm, Net/SMTP.pm, Net/SSLeay.pm

Primary and secondary AV scanner?  Is this right?  I installed:

# grep clam /var/log/yum.log* /var/log/yum.log:Feb 06 08:40:06 Installed: clamav-filesystem-0.101.1-1.el7.noarch /var/log/yum.log:Feb 06 08:40:29 Installed: clamav-lib-0.101.1-1.el7.armv7hl /var/log/yum.log:Feb 06 08:40:30 Installed: clamav-update-0.101.1-1.el7.armv7hl /var/log/yum.log:Feb 06 08:40:59 Installed: clamav-devel-0.101.1-1.el7.armv7hl /var/log/yum.log:Feb 06 08:41:01 Installed: clamav-0.101.1-1.el7.armv7hl /var/log/yum.log:Feb 06 08:46:16 Installed: clamd-0.101.1-1.el7.armv7hl /var/log/yum.log:Feb 06 08:46:17 Installed: clamav-server-systemd-0.101.1-1.el7.armv7hl

thanks