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mailcow-dockerized/data/conf/rspamd/lua/ivm-sg.lua

62 lines
1.8 KiB
Lua

-- Thanks to https://raw.githubusercontent.com/fatalbanana
local lua_maps = require 'lua_maps'
local rspamd_regexp = require 'rspamd_regexp'
local rspamd_util = require 'rspamd_util'
local ivm_sendgrid_ids = lua_maps.map_add_from_ucl(
'https://www.invaluement.com/spdata/sendgrid-id-dnsbl.txt',
'set',
'Invaluement Service Provider DNSBL: Sendgrid IDs'
)
local ivm_sendgrid_envfromdomains = lua_maps.map_add_from_ucl(
'https://www.invaluement.com/spdata/sendgrid-envelopefromdomain-dnsbl.txt',
'set',
'Invaluement Service Provider DNSBL: Sendgrid envelope domains'
)
local cb_id = rspamd_config:register_symbol({
name = 'IVM_SENDGRID',
callback = function(task)
-- Is it Sendgrid?
local sg_hdr = task:get_header('X-SG-EID')
if not sg_hdr then return end
-- Get original envelope from
local env_from = task:get_from{'smtp', 'orig'}
if not env_from then return end
-- Check normalised domain in domains list
if ivm_sendgrid_envfromdomains and ivm_sendgrid_envfromdomains:get_key(rspamd_util.get_tld(env_from[1].domain)) then
task:insert_result('IVM_SENDGRID_DOMAIN', 1.0)
end
-- Check ID in ID list
local lp_re = rspamd_regexp.create_cached([[^bounces\+(\d+)-]])
local res = lp_re:search(env_from[1].user, true, true)
if not res then return end
if ivm_sendgrid_ids and ivm_sendgrid_ids:get_key(res[1][2]) then
task:insert_result('IVM_SENDGRID_ID', 1.0)
end
end,
description = 'Invaluement Service Provider DNSBL: Sendgrid',
type = 'callback',
})
rspamd_config:register_symbol({
name = 'IVM_SENDGRID_DOMAIN',
parent = cb_id,
group = 'ivmspdnsbl',
score = 8.0,
type = 'virtual',
})
rspamd_config:register_symbol({
name = 'IVM_SENDGRID_ID',
parent = cb_id,
group = 'ivmspdnsbl',
score = 8.0,
type = 'virtual',
})