I'd like to move this question to this section, thanks in advance. I've been trying to setup a domain split configuration with Google Apps as the main mail controller. I've seen this post with CPanel and it makes a lot of sense, I'm trying to recreate it on ISPConfig, 1. root domain (domain.com) must have MX records pointing to Google's MX servers; 2. there must be a subdomain CNAME (gapps.domain.com) as alias of root domain (domain.com), this will be used to deliver mail sent through cPanel or its SMTP; 3. there must be another subdomain CNAME (cp.domain.com) as alias to the cPanel hosting server (in my case, HostGator's server br###.hostgator.com.br, masked for example purposes); 4. Google Apps Split Delivery must be correctly configured (Configure split delivery - Google Apps Administrator Help), with the subdomain described in step #3 as the destination (step 7 on this page); 5. on cPanel, use Local Server as the setting on the MX Records page for the root domain; 6. on cPanel, set a Domain Forwarder with "from: domain.com" and "to: gapps.domain.com"; 7. on Google Apps, set a default route to change envelope recipient of all mail that corresponds to the REGEXP "\[email protected]" with the "Replace Recipient" setting, set to the "[email protected]" option. https://forums.cpanel.net/threads/google-apps-split-delivery-for-domain.209402/#post-2260661 I'm stuck at Point 5 forward, if i'm running DNS from the test server, I believe that that point is already done... maybe(?) On Point 6, should I Alias (Domain alias) or Route (Email Routing) the from domain.com => gapps.domain.com Any ideas or suggestions are welcome.