I have a domain example: domain.com which is on gmail. It has 5 users. I want to setup zarafa community edition on my local network such that, It is setup for the same domain domain.com with 10 accounts. 5 accounts will be same as the ones from gmail and 5 internal only. All 10 users should be able to send/receive emails internally but only the 5 which are in gmail also, should be able to send/receive external emails. Or in other words, out of 10 accounts on Zarafa, 5 are tied to gmail accounts and 5 are zarafa only. Is this possible? My users will always connect to zarafa to get/send emails (both internal and external users) so emails received by gmail should also be pulled by Zarafa on respective mailboxes.