Integrate rspamd with cpanel

## chkserv.d-rspamd
service[rspamd]=x,x,x,/etc/init.d/rspamd restart,rspamd,_rspamd

## Integrate rspamd with cpanel
* go to whm -> exim configuration manager
* choose advanced editor
* search spamd & replace with this:

spamd_address = 127.0.0.1 11333 variant=rspamd

system_filter = /etc/exim_system_filter
system_filter_file_transport = address_file

* find and disable greylisting block
* find and disable _default_check_message_pre_ on acl_smtp_data
* find section acl_smtp_data:custom_begin_spam_scan
* complete block with this:


  # Remove spam headers from outside sources
  warn  remove_header  = x-spam-subject : x-spam-status : x-spam-score : x-spam-bar : x-spam-report : x-spam-flag : x-ham-report

  # add spam-score and spam-report header when told by rspamd
  # also scan outgoing messages
  warn  spam        = nobody:true
        log_message = "rspam_score: $spam_score ($spam_bar) rspam_report: $spam_report"
        !authenticated = *
        add_header = X-Spam-Score: $spam_score ($spam_bar)
        add_header = X-Spam-Report: $spam_report
        add_header = X-Spam-Action: $spam_action

  warn  condition  = ${if eq{$spam_action}{rewrite subject}}
        add_header = X-Spam-Subject: ***SPAM*** $rh_subject
        add_header = X-Spam-Status: Yes

  defer message    = Please try again later
        condition  = ${if eq{$spam_action}{greylist}}

  defer message    = Please try again later
        condition  = ${if eq{$spam_action}{soft reject}}

  deny  message    = Message discarded as high-probability spam
        condition = ${if eq{$spam_action}{reject}}


7. disable  default_spam_scan, default_spam_scan_check block
8. disable acl_not_smtp:outgoing_spam_scan_over_int,  acl_smtp_data:no_forward_outbound_spam_over_int
9. reject mail which get score higher than 6 if they is sent via non_smtp (sendmail, php mail())
Note: this will ignore completely messages which are sent from root user.

** Find block acl_not_smtp:custom_begin_not_smtp and paste this code

  warn  condition   = ${if eq{$sender_address_local_part}{root} {no} {yes}}
        spam        = nobody:true
        log_message = "rspam_score: $spam_score ($spam_bar) rspam_report: $spam_report sender_address_local_part = $sender_address_local_part"
        add_header = X-Spam-Score: $spam_score ($spam_bar)
        add_header = X-Spam-Report: $spam_report
        add_header = X-Spam-Action: $spam_action

  deny  message    = Message discarded as high-probability spam
        condition = ${if >= {$spam_score_int}{60}}

  deny  message    = Message discarded as high-probability spam
        condition = ${if eq{$spam_action}{reject}}

  accept

** disable acl_not_smtp:end_default_outgoing_notsmtp_checkall

10. deliver mail with high score of spam to /dev/null if is try to be forwarded due email forwards
*** Put these block in to begin routers block, before router boxtrapper_autowhitelist or enforce_mail_permissions:

# version with using of delivery as save to /dev/null (logs will show actual delivery to recipient email, which is not true action)
# reject_forwarded_mail_marked_as_spam:
#     driver = accept
#     ignore_target_hosts = 127.0.0.1
#     condition = ${if eq {${lookup {$sender_address_domain} lsearch{/etc/userdomains}{$value}}}{}{true}{false}}
#     condition = ${if match{$header_X-Spam-Score:}{\N\+\+\+\+\+\N}{yes}{no}}
#      # condition = ${if >= {$spam_score_int}{50}}
#     domains = ! +local_domains : !$primary_hostname
#     transport = file_to_devnull

silent_drop_forwarded_mail_marked_as_spam:
    driver = redirect
    ignore_target_hosts = 127.0.0.1
    condition = ${if eq {${lookup {$sender_address_domain} lsearch{/etc/userdomains}{$value}}}{}{true}{false}}
    # condition = ${if match{$header_X-Spam-Score:}{\N\+\+\+\+\+\N}{yes}{no}}
    condition = ${if >= {$spam_score_int}{50}}
    domains = ! +local_domains : !$primary_hostname
    allow_filter
    user = mailnull
    file_transport = file_to_devnull
    data = #Exim filter\n\
        save /dev/null


** Put this transport after begin transports:


file_to_devnull:
    driver = appendfile
    file = /dev/null


** system_filter:

# Exim filter
if "${if def:header_X-Spam-Subject: {there}}" is there
then
    headers remove Subject
    headers add "Subject: $rh_X-Spam-Subject:"
    headers remove X-Spam-Subject
endif


* add router which will store Spam messages in INBOX.Junk directory

virtual_user_spam_dir:
    driver = redirect
    domains = !$primary_hostname
    # condition = ${if match{$header_X-Spam-Score:}{\N\+\+\+\+\+\N}{yes}{no}}
    condition = ${if >= {$spam_score_int}{60}}
    require_files = "+/etc/valiases/$domain:+${extract{5}{::}{${lookup passwd{${lookup{$domain}lsearch{/etc/userdomains}{$value}}}{$value}}}}/mail/$domain/$local_part"
    data = "$local_part+Junk@$domain"
    redirect_router = virtual_user

## multimap.conf
# /etc/rspamd/local.d
# local settings for multimap module

MM_WHITELISTED_ASN {
  type = "asn";
  map = "${LOCAL_CONFDIR}/local.d/whitelisted_asn.map";
  description = "Messages which are coming from whitelisted ASN";
  score = -10;
}
MM_BLACKLISTED_IP {
  type = "ip";
  map = "${LOCAL_CONFDIR}/local.d/blacklisted_sourceip.map";
  description = "Blacklisted ips";
  score = 12;
}
MM_WHITELISTED_IP {
	type = "ip";
	map = "${LOCAL_CONFDIR}/local.d/whitelisted_sourceip.map";
	description = "Whitelisted ips";
	score = -10;
}
MM_UNSECURED_CAPTCHA_FORM {
  type = "header";
  header = "Subject";
  map = "${LOCAL_CONFDIR}/local.d/rejected_by_subject.map";
  regexp = true;
  score = 10;
  symbols = ["HAS_X_PHP_SCRIPT"];
#  action = "reject";
}

MM_BLACKLISTED_BY_FORGED_SENDER {
	type = "from";
	filter = "email:user";
	map = "${LOCAL_CONFDIR}/local.d/blacklisted_by_forged_sender.map";
	symbols = ["FORGED_SENDER"];
	action = "reject";
}
MM_BLACKLISTED_BY_SENDER {
        type = "from";
        filter = "email:user";
        map = "${LOCAL_CONFDIR}/local.d/blacklisted_by_sender.map";
        action = "reject";
}
MM_WHITELISTED_BY_SUBJECT {
  type = "header";
  header = "Subject";
  map = "${LOCAL_CONFDIR}/local.d/whitelisted_by_subject.map";
  regexp = true;
  score = -5;
#  action = "reject";
}
MM_WHITELISTED_BY_FROM_HEADER {
  type = "from";
  map = "${LOCAL_CONFDIR}/local.d/whitelisted_by_from_header.map";
  regexp = true;
  score = -7;
#  action = "reject";
}
MM_BLACKLISTED_BY_FROM_HEADER {
  type = "from";
  map = "${LOCAL_CONFDIR}/local.d/blacklisted_by_from_header.map";
  regexp = true;
  score = 6;
#  action = "reject";
}

## override.d
# cat logging.inc
type=file
filename=/var/log/rspamd.log

# cat metrics.conf
actions {
      reject = 15;
      rewrite_subject = 8;
      add_header = 6;
      greylist = 4;
}

# cat worker-controller.inc
bind_socket = "IP:11334";
password = "PASSWORD HASH";

## system_filter
# Exim filter

if not first_delivery then
	finish
endif

if "${if def:header_X-Spam-Subject: {there}}" is there then
	headers remove Subject
	headers add "Subject: $rh_X-Spam-Subject:"
	headers remove X-Spam-Subject
endif

if $h_X-Spam-Score: contains "+++++" and $h_To does not contains "postmaster" then
        if $h_X-Spam-Score: contains "+++++++++++" then
                save "/dev/null"
        else
                deliver "spam@XXXXXX"
        endif
endif