Update Synology Mail Plus spam server more than once a day
Just found the scripts that you can run and schedule to run more often than once a day. And if you run ClaimAV as virusscanner.
Run the following scripts.
bash /volume1/@appstore/MailPlus-Server/scripts/SpamRuleUpdate.sh all
bash /volume1/@appstore/AntiVirus/scripts/clamav.sh check_update