2 Amended answer to address outgoing message acceptance/spam filtering
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Google Apps includes a variety of ways to divert mail to multiple inboxes, however, there is not (to the best of my knowledge) any reliable way to send and receive e-mail through Google Apps while sending and receiving e-mail through a cPanel server under the same domain. The following solution allows you to make full use of Google Apps' excellent spam filtering and overall uptime while maintaining an accountability trail for incoming messages intended for OSTicket.

  1. Use Google Apps to host mail under your primary domain; use cPanel to host mail under a subdomain (i.e. support.domain.com) and create an e-mail user osticket@support.domain.com on that subdomain

  2. Create a Google Apps user account (no-reply@domain.com) to act as a catch-all for your domain - the advantage of using no-reply@domain.com overalias you will use (support@domain.com will become apparent when you find a need) to add other aliasesforward mail Create a Google Apps user account (no-reply@domain.com) to act as a catch-all for your domain - the advantage of using no-reply@domain.com over support@domain.com will become apparent when you find a need to add other aliases

  3. In the catch-all account, create a filter to forward (and mark as read) messages addressed To: support@domain.com to the osticket@support.domain.com address

  4. Configure OSTicketyour application (i.e. OSTicket) to route outgoing mail with the Google Apps SMTP settings to send messages as support@domain.com

Google Apps includes a variety of ways to divert mail to multiple inboxes, however, there is not (to the best of my knowledge) any reliable way to send and receive e-mail through Google Apps while sending and receiving e-mail through a cPanel server under the same domain. The following solution allows you to make full use of Google Apps' excellent spam filtering and overall uptime while maintaining an accountability trail for incoming messages intended for OSTicket.

  1. Use Google Apps to host mail under your primary domain; use cPanel to host mail under a subdomain (i.e. support.domain.com) and create an e-mail user osticket@support.domain.com on that subdomain

  2. Create a Google Apps user account (no-reply@domain.com) to act as a catch-all for your domain - the advantage of using no-reply@domain.com over support@domain.com will become apparent when you find a need to add other aliases

  3. In the catch-all account, create a filter to forward (and mark as read) messages addressed To: support@domain.com to the osticket@support.domain.com address

  4. Configure OSTicket to send messages as support@domain.com

Google Apps includes a variety of ways to divert mail to multiple inboxes, however, there is not (to the best of my knowledge) any reliable way to send and receive e-mail through Google Apps while sending and receiving e-mail through a cPanel server under the same domain. The following solution allows you to make full use of Google Apps' excellent spam filtering and overall uptime while maintaining an accountability trail for incoming messages intended for OSTicket.

  1. Use Google Apps to host mail under your primary domain; use cPanel to host mail under a subdomain (i.e. support.domain.com) and create an e-mail user osticket@support.domain.com on that subdomain

  2. Create a Google Apps user account for the alias you will use (support@domain.com) to forward mail Create a Google Apps user account (no-reply@domain.com) to act as a catch-all for your domain - the advantage of using no-reply@domain.com over support@domain.com will become apparent when you find a need to add other aliases

  3. In the account, create a filter to forward (and mark as read) messages addressed To: support@domain.com to the osticket@support.domain.com address

  4. Configure your application (i.e. OSTicket) to route outgoing mail with the Google Apps SMTP settings to send messages as support@domain.com

1
source | link

Google Apps includes a variety of ways to divert mail to multiple inboxes, however, there is not (to the best of my knowledge) any reliable way to send and receive e-mail through Google Apps while sending and receiving e-mail through a cPanel server under the same domain. The following solution allows you to make full use of Google Apps' excellent spam filtering and overall uptime while maintaining an accountability trail for incoming messages intended for OSTicket.

  1. Use Google Apps to host mail under your primary domain; use cPanel to host mail under a subdomain (i.e. support.domain.com) and create an e-mail user osticket@support.domain.com on that subdomain

  2. Create a Google Apps user account (no-reply@domain.com) to act as a catch-all for your domain - the advantage of using no-reply@domain.com over support@domain.com will become apparent when you find a need to add other aliases

  3. In the catch-all account, create a filter to forward (and mark as read) messages addressed To: support@domain.com to the osticket@support.domain.com address

  4. Configure OSTicket to send messages as support@domain.com