smeserver-spamassassin/root/etc/logrotate.d/spamd

/var/log/spamd/spamd.log
{
    missingok
    notifempty
    sharedscripts
    delaycompress
    su root root
    create 600 root root
    postrotate
        /usr/bin/systemctl -s HUP kill rsyslog.service >/dev/null 2>&1 || true
    endscript
}