rspamd_config.MAILCOW_AUTH = { callback = function(task) local uname = task:get_user() if uname then return 1 end end } local monitoring_hosts = rspamd_config:add_map{ url = "/etc/rspamd/custom/monitoring_nolog.map", description = "Monitoring hosts", type = "regexp" } rspamd_config:register_symbol({ name = 'SMTP_ACCESS', type = 'postfilter', callback = function(task) local util = require("rspamd_util") local rspamd_logger = require "rspamd_logger" local rspamd_ip = require 'rspamd_ip' local uname = task:get_user() local limited_access = task:get_symbol("SMTP_LIMITED_ACCESS") if not uname then return false end if not limited_access then return false end local hash_key = 'SMTP_ALLOW_NETS_' .. uname local redis_params = rspamd_parse_redis_server('smtp_access') local ip = task:get_from_ip() if ip == nil or not ip:is_valid() then return false end local from_ip_string = tostring(ip) smtp_access_table = {from_ip_string} local maxbits = 128 local minbits = 32 if ip:get_version() == 4 then maxbits = 32 minbits = 8 end for i=maxbits,minbits,-1 do local nip = ip:apply_mask(i):to_string() .. "/" .. i table.insert(smtp_access_table, nip) end local function smtp_access_cb(err, data) if err then rspamd_logger.infox(rspamd_config, "smtp_access query request for ip %s returned invalid or empty data (\"%s\") or error (\"%s\")", ip, data, err) return false else rspamd_logger.infox(rspamd_config, "checking ip %s for smtp_access in %s", from_ip_string, hash_key) for k,v in pairs(data) do if (v and v ~= userdata and v == '1') then rspamd_logger.infox(rspamd_config, "found ip in smtp_access map") task:insert_result(true, 'SMTP_ACCESS', 0.0, from_ip_string) return true end end rspamd_logger.infox(rspamd_config, "couldnt find ip in smtp_access map") task:insert_result(true, 'SMTP_ACCESS', 999.0, from_ip_string) return true end end table.insert(smtp_access_table, 1, hash_key) local redis_ret_user = rspamd_redis_make_request(task, redis_params, -- connect params hash_key, -- hash key false, -- is write smtp_access_cb, --callback 'HMGET', -- command smtp_access_table -- arguments ) if not redis_ret_user then rspamd_logger.infox(rspamd_config, "cannot check smtp_access redis map") end end, priority = 10 }) rspamd_config:register_symbol({ name = 'POSTMASTER_HANDLER', type = 'prefilter', callback = function(task) local rcpts = task:get_recipients('smtp') local rspamd_logger = require "rspamd_logger" local lua_util = require "lua_util" local from = task:get_from(1) -- not applying to mails with more than one rcpt to avoid bypassing filters by addressing postmaster if rcpts and #rcpts == 1 then for _,rcpt in ipairs(rcpts) do local rcpt_split = rspamd_str_split(rcpt['addr'], '@') if #rcpt_split == 2 then if rcpt_split[1] == 'postmaster' then task:set_pre_result('accept', 'whitelisting postmaster smtp rcpt') return end end end end if from then for _,fr in ipairs(from) do local fr_split = rspamd_str_split(fr['addr'], '@') if #fr_split == 2 then if fr_split[1] == 'postmaster' and task:get_user() then -- no whitelist, keep signatures task:insert_result(true, 'POSTMASTER_FROM', -2500.0) return end end end end end, priority = 10 }) rspamd_config:register_symbol({ name = 'KEEP_SPAM', type = 'prefilter', callback = function(task) local util = require("rspamd_util") local rspamd_logger = require "rspamd_logger" local rspamd_ip = require 'rspamd_ip' local uname = task:get_user() if uname then return false end local redis_params = rspamd_parse_redis_server('keep_spam') local ip = task:get_from_ip() if ip == nil or not ip:is_valid() then return false end local from_ip_string = tostring(ip) ip_check_table = {from_ip_string} local maxbits = 128 local minbits = 32 if ip:get_version() == 4 then maxbits = 32 minbits = 8 end for i=maxbits,minbits,-1 do local nip = ip:apply_mask(i):to_string() .. "/" .. i table.insert(ip_check_table, nip) end local function keep_spam_cb(err, data) if err then rspamd_logger.infox(rspamd_config, "keep_spam query request for ip %s returned invalid or empty data (\"%s\") or error (\"%s\")", ip, data, err) return false else for k,v in pairs(data) do if (v and v ~= userdata and v == '1') then rspamd_logger.infox(rspamd_config, "found ip in keep_spam map, setting pre-result") task:set_pre_result('accept', 'ip matched with forward hosts') end end end end table.insert(ip_check_table, 1, 'KEEP_SPAM') local redis_ret_user = rspamd_redis_make_request(task, redis_params, -- connect params 'KEEP_SPAM', -- hash key false, -- is write keep_spam_cb, --callback 'HMGET', -- command ip_check_table -- arguments ) if not redis_ret_user then rspamd_logger.infox(rspamd_config, "cannot check keep_spam redis map") end end, priority = 19 }) rspamd_config:register_symbol({ name = 'TLS_HEADER', type = 'postfilter', callback = function(task) local rspamd_logger = require "rspamd_logger" local tls_tag = task:get_request_header('TLS-Version') if type(tls_tag) == 'nil' then task:set_milter_reply({ add_headers = {['X-Last-TLS-Session-Version'] = 'None'} }) else task:set_milter_reply({ add_headers = {['X-Last-TLS-Session-Version'] = tostring(tls_tag)} }) end end, priority = 12 }) rspamd_config:register_symbol({ name = 'TAG_MOO', type = 'postfilter', callback = function(task) local util = require("rspamd_util") local rspamd_logger = require "rspamd_logger" local redis_params = rspamd_parse_redis_server('taghandler') local rspamd_http = require "rspamd_http" local rcpts = task:get_recipients('smtp') local lua_util = require "lua_util" local tagged_rcpt = task:get_symbol("TAGGED_RCPT") local mailcow_domain = task:get_symbol("RCPT_MAILCOW_DOMAIN") if tagged_rcpt and tagged_rcpt[1].options and mailcow_domain then local tag = tagged_rcpt[1].options[1] rspamd_logger.infox("found tag: %s", tag) local action = task:get_metric_action('default') rspamd_logger.infox("metric action now: %s", action) if action ~= 'no action' and action ~= 'greylist' then rspamd_logger.infox("skipping tag handler for action: %s", action) return true end local function http_callback(err_message, code, body, headers) if body ~= nil and body ~= "" then rspamd_logger.infox(rspamd_config, "expanding rcpt to \"%s\"", body) local function tag_callback_subject(err, data) if err or type(data) ~= 'string' then rspamd_logger.infox(rspamd_config, "subject tag handler rcpt %s returned invalid or empty data (\"%s\") or error (\"%s\") - trying subfolder tag handler...", body, data, err) local function tag_callback_subfolder(err, data) if err or type(data) ~= 'string' then rspamd_logger.infox(rspamd_config, "subfolder tag handler for rcpt %s returned invalid or empty data (\"%s\") or error (\"%s\")", body, data, err) else rspamd_logger.infox("Add X-Moo-Tag header") task:set_milter_reply({ add_headers = {['X-Moo-Tag'] = 'YES'} }) end end local redis_ret_subfolder = rspamd_redis_make_request(task, redis_params, -- connect params body, -- hash key false, -- is write tag_callback_subfolder, --callback 'HGET', -- command {'RCPT_WANTS_SUBFOLDER_TAG', body} -- arguments ) if not redis_ret_subfolder then rspamd_logger.infox(rspamd_config, "cannot make request to load tag handler for rcpt") end else rspamd_logger.infox("user wants subject modified for tagged mail") local sbj = task:get_header('Subject') new_sbj = '=?UTF-8?B?' .. tostring(util.encode_base64('[' .. tag .. '] ' .. sbj)) .. '?=' task:set_milter_reply({ remove_headers = {['Subject'] = 1}, add_headers = {['Subject'] = new_sbj} }) end end local redis_ret_subject = rspamd_redis_make_request(task, redis_params, -- connect params body, -- hash key false, -- is write tag_callback_subject, --callback 'HGET', -- command {'RCPT_WANTS_SUBJECT_TAG', body} -- arguments ) if not redis_ret_subject then rspamd_logger.infox(rspamd_config, "cannot make request to load tag handler for rcpt") end end end if rcpts and #rcpts == 1 then for _,rcpt in ipairs(rcpts) do local rcpt_split = rspamd_str_split(rcpt['addr'], '@') if #rcpt_split == 2 then if rcpt_split[1] == 'postmaster' then rspamd_logger.infox(rspamd_config, "not expanding postmaster alias") else rspamd_http.request({ task=task, url='http://nginx:8081/aliasexp.php', body='', callback=http_callback, headers={Rcpt=rcpt['addr']}, }) end end end end end end, priority = 19 }) rspamd_config:register_symbol({ name = 'BCC', type = 'postfilter', callback = function(task) local util = require("rspamd_util") local rspamd_http = require "rspamd_http" local rspamd_logger = require "rspamd_logger" local from_table = {} local rcpt_table = {} if task:has_symbol('ENCRYPTED_CHAT') then return -- stop end local send_mail = function(task, bcc_dest) local lua_smtp = require "lua_smtp" local function sendmail_cb(ret, err) if not ret then rspamd_logger.errx(task, 'BCC SMTP ERROR: %s', err) else rspamd_logger.infox(rspamd_config, "BCC SMTP SUCCESS TO %s", bcc_dest) end end if not bcc_dest then return -- stop end lua_smtp.sendmail({ task = task, host = os.getenv("IPV4_NETWORK") .. '.253', port = 591, from = task:get_from(stp)[1].addr, recipients = bcc_dest, helo = 'bcc', timeout = 10, }, task:get_content(), sendmail_cb) end -- determine from local from = task:get_from('smtp') if from then for _, a in ipairs(from) do table.insert(from_table, a['addr']) -- add this rcpt to table table.insert(from_table, '@' .. a['domain']) -- add this rcpts domain to table end else return -- stop end -- determine rcpts local rcpts = task:get_recipients('smtp') if rcpts then for _, a in ipairs(rcpts) do table.insert(rcpt_table, a['addr']) -- add this rcpt to table table.insert(rcpt_table, '@' .. a['domain']) -- add this rcpts domain to table end else return -- stop end local action = task:get_metric_action('default') rspamd_logger.infox("metric action now: %s", action) local function rcpt_callback(err_message, code, body, headers) if err_message == nil and code == 201 and body ~= nil then if action == 'no action' or action == 'add header' or action == 'rewrite subject' then send_mail(task, body) end end end local function from_callback(err_message, code, body, headers) if err_message == nil and code == 201 and body ~= nil then if action == 'no action' or action == 'add header' or action == 'rewrite subject' then send_mail(task, body) end end end if rcpt_table then for _,e in ipairs(rcpt_table) do rspamd_logger.infox(rspamd_config, "checking bcc for rcpt address %s", e) rspamd_http.request({ task=task, url='http://nginx:8081/bcc.php', body='', callback=rcpt_callback, headers={Rcpt=e} }) end end if from_table then for _,e in ipairs(from_table) do rspamd_logger.infox(rspamd_config, "checking bcc for from address %s", e) rspamd_http.request({ task=task, url='http://nginx:8081/bcc.php', body='', callback=from_callback, headers={From=e} }) end end return true end, priority = 20 }) rspamd_config:register_symbol({ name = 'DYN_RL_CHECK', type = 'prefilter', callback = function(task) local util = require("rspamd_util") local redis_params = rspamd_parse_redis_server('dyn_rl') local rspamd_logger = require "rspamd_logger" local envfrom = task:get_from(1) local uname = task:get_user() if not envfrom or not uname then return false end local uname = uname:lower() local env_from_domain = envfrom[1].domain:lower() -- get smtp from domain in lower case local function redis_cb_user(err, data) if err or type(data) ~= 'string' then rspamd_logger.infox(rspamd_config, "dynamic ratelimit request for user %s returned invalid or empty data (\"%s\") or error (\"%s\") - trying dynamic ratelimit for domain...", uname, data, err) local function redis_key_cb_domain(err, data) if err or type(data) ~= 'string' then rspamd_logger.infox(rspamd_config, "dynamic ratelimit request for domain %s returned invalid or empty data (\"%s\") or error (\"%s\")", env_from_domain, data, err) else rspamd_logger.infox(rspamd_config, "found dynamic ratelimit in redis for domain %s with value %s", env_from_domain, data) task:insert_result('DYN_RL', 0.0, data, env_from_domain) end end local redis_ret_domain = rspamd_redis_make_request(task, redis_params, -- connect params env_from_domain, -- hash key false, -- is write redis_key_cb_domain, --callback 'HGET', -- command {'RL_VALUE', env_from_domain} -- arguments ) if not redis_ret_domain then rspamd_logger.infox(rspamd_config, "cannot make request to load ratelimit for domain") end else rspamd_logger.infox(rspamd_config, "found dynamic ratelimit in redis for user %s with value %s", uname, data) task:insert_result('DYN_RL', 0.0, data, uname) end end local redis_ret_user = rspamd_redis_make_request(task, redis_params, -- connect params uname, -- hash key false, -- is write redis_cb_user, --callback 'HGET', -- command {'RL_VALUE', uname} -- arguments ) if not redis_ret_user then rspamd_logger.infox(rspamd_config, "cannot make request to load ratelimit for user") end return true end, flags = 'empty', priority = 20 }) rspamd_config:register_symbol({ name = 'NO_LOG_STAT', type = 'postfilter', callback = function(task) local from = task:get_header('From') if from and monitoring_hosts:get_key(from) then task:set_flag('no_log') task:set_flag('no_stat') end end })