I apologize my ignorance on Exchange beforehand, it is my first time implementing one up.
I have recently implemented an Exchange 2013 box in my organization.
We were currently running a Hybrid configuration with an on Premises Exchange 2007 server and Office 365. We will soon be migrating our MX (domain.com) to office 365.
This new Exchange 2013 box was implemented in order to host a couple of mailboxes and groups that will be used on our LOB applications. Another MX and namespace (maildomain.com) has been configured and tested to be handled by this server. This Exchange 2013 is now in coexistence with my on premises Exchange 2007. A new SMTP address has been added to my users with this new namespace.
When I send an email to this new domain namespace (from internal or external account) to any of my users, It does not arrive to the email client for some reason and I am not getting any email delivery notification back that can help me out troubleshooting the situation. I have been looking for logs everywhere and I have not found anything that can give me a hint of what could be happening.
I am most probably missing some extra configuration.
Any help on this is greatly appreciated!