Hello,

We recently migrated to Office365 but had an issue since we need more than 16 simultaneous connections to a single mailbox. Because of this, we need to deploy a local Exchange Server that will be used to host a single mailbox that requires up to 500 simultaneous connections for a Contact Center application. I'm looking for information on how to setup the local Exchange Server to basically create a local instance of a mailbox hosted on Office 365. So we can have our application open the numerous simultaneous connections to our local server which will then connection to Office 365 to send/receive email through the mailbox hosted on Office365.

Please let me know if you have any information or resources you can direct me toward.

Thanks,
Chris

I think you will need to setup the autodiscover to local server, so whenever a mailbox queries the server it will first hit the local server and then local server will forward the request to O365.

Hi,

To deploy local Exchange server integrated with Office 365, we can depend on Exchange Server Deployment Assistant:

http://technet.microsoft.com/en-us/exdeploy2013/Checklist?state=2419-W-AAAAAAAAQAAAAAEAAAAAAAA%7e

Please note that there may be 9646 error if there are many simultaneous connections at the same time.

Thanks,