cPanel/WHM IP-based Authentication
- In WHM, navigate to the Exim Configuration Editor
- Select Advanced Editor
- Add the following code to the POSTMAILCOUNT section
- Add the following to the TRANSPORTSTART section:
- Save and restart
smarthost_dkim: driver = manualroute domains = !+local_domains require_files = "+/var/cpanel/domain_keys/private/${lookup{$sender_address_domain}dsearch{/var/cpanel/domain_keys/private/}}" # Exclude null sender messages from relaying via the smarthost condition = ${if or {{!eq{$sender_address}{}} {!eq{$sender_host_address}{}}}} transport = remote_smtp_smart_dkim route_list = $domain SMARTHOST::587 smarthost_regular: driver = manualroute domains = !+local_domains # Exclude null sender messages from relaying via the smarthost condition = ${if or {{!eq{$sender_address}{}} {!eq{$sender_host_address}{}}}} transport = remote_smtp_smart_regular route_list = $domain SMARTHOST::587
Replace all instances of SMARTHOST
with your SMTP hostname
remote_smtp_smart_dkim: driver = smtp hosts_require_tls = * interface = ${if exists {/etc/mailips}{${lookup{$sender_address_domain}lsearch*{/etc/mailips}{$value}{}}}{}} helo_data = ${if exists {/etc/mailhelo}{${lookup{$sender_address_domain}lsearch*{/etc/mailhelo}{$value}{$primary_hostname}}}{$primary_hostname}} dkim_domain = $sender_address_domain dkim_selector = default dkim_private_key = "/var/cpanel/domain_keys/private/${lookup{$dkim_domain}dsearch{/var/cpanel/domain_keys/private/}}" dkim_canon = relaxed headers_add = "${perl{check_mail_permissions_headers}}" remote_smtp_smart_regular: driver = smtp hosts_require_tls = * interface = ${if exists {/etc/mailips}{${lookup{$sender_address_domain}lsearch*{/etc/mailips}{$value}{}}}{}} helo_data = ${if exists {/etc/mailhelo}{${lookup{$sender_address_domain}lsearch*{/etc/mailhelo}{$value}{$primary_hostname}}}{$primary_hostname}} headers_add = "${perl{check_mail_permissions_headers}}"
All traffic from the cPanel/WHM server will be routed to the Spam Experts filtering nodes.