Exchange 2010 Hybrid with Office 365.
Mail Flows to/from On-Premise to Office 365
Mail Flows to/from Internet to On-Premise/Office 365
My Issue is with Public Folders. We have some SQL Server Processes that Process emails that are sent to a Public Folder. Messages are Read, The Body is parsed and Inserted into SQL Server and the email is deleted or moved to an Archive Public Folder and then anything older that 2 weeks is deleted.
In a Hybrid setup On-Premise can only see On-Premise Public Folders and Office 365 users can only see the Office 365 Public Folders.
When a Office 365 user sends an email to the Primary SMTP address of a On-Premise Public Folder, the email fails as Undeliverable.
When a Office 365 user sends an email to a secondary SMTP address of a On-Premise Public Folder it gets there just fine.
A Few Questions:
1) Why can you send to the non-Primary SMTP Address of the On-Premise Public Folder?
2) Should I still be using Public Folders?
3) Can I setup a Office 365 Shared Mailbox for this Purpose and have both On-Premise and Office 365 users send email to it without the NDR?
4) Using EWS (non Managed) can you Access the Shared Mailbox like you can a non-Shared Mailbox?