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https://www.howtoforge.com/replacing-amavisd-with-rspamd-in-ispconfig/
Replacing Amavisd with Rspamd in ISPConfig 3.1 on Debian and Ubuntu
Rspamd is a modern high-performance spam scan software for Linux servers which delivers very accurate filter results. This tutorial describes the step...
ispconfig 3 1replacingamavisdrspamddebian
https://docs.iredmail.org/iredadmin-pro.custom.ban.rules.html
iRedAdmin-Pro: Custom (Amavisd) ban rules
iredadmin procustomamavisdbanrules
https://docs.iredmail.org/debug.amavisd.html
Turn on debug mode in Amavisd and SpamAssassin
debug modeturnamavisdspamassassin