On 17.08.2022 17:08, Vu Ngoc VU wrote: > > Could someone explain to me where I can find the rule for INTRODUCTION symbol in my system please? > https://github.com/rspamd/rspamd/blob/79417a5f81e6d990364d3a541928b278f30492d2/rules/regexp/misc.lua#L46-L52