How to disable antivirus completely when low on memory?

This is how I managed:

nano /etc/postfix/main.cf​

comment out:

#smtpd_milters = inet:localhost:11332
#non_smtpd_milters = inet:localhost:11332​

systemctl disable --now clamav-daemon.service
systemctl disable --now clamav-freshclam.service
systemctl disable --now rspamd.service
systemctl restart postfix dovecot​

Anything else I should be aware of?

 

This is okay, I am setting up just a relay server. Only for handing over. The originating server does all the virus and spam checking and the big email vendors happily receive such relayed messages: Gmail, Yahoo, Outlook, GMX and even T-Online.