Forum Discussion
Multi Forest Hybrid Exchange - same email address all users
Yes, you can ;-)
Minimal hybrid supports multi-forest Exchange hybrid deployments.
https://blogs.technet.microsoft.com/exchange/2016/06/24/hcw-improvement-the-minimal-hybrid-configuration-option/ --> have a look at the comments, Tim from Microsoft answered the question.
Alias: you can send email from an address which is the reply address of your mailbox. You can use address rewriting or similar features to accomplish this.
I'm not sure minimal Hybrid is supported with multi-forest scenarios, best contact support to confirm that. Once you get the mailboxes to O365, you should have no problems assigning aliases from either domain though, as they will be in the same organization.
Hi thanks for mentioning that, hopefully I can get this confirmed.
setting an alias would only allow you to receive to that address? I would want all users to have the same email address for sending/receiving.
Yes, you can ;-)
Minimal hybrid supports multi-forest Exchange hybrid deployments.
https://blogs.technet.microsoft.com/exchange/2016/06/24/hcw-improvement-the-minimal-hybrid-configuration-option/ --> have a look at the comments, Tim from Microsoft answered the question.
Alias: you can send email from an address which is the reply address of your mailbox. You can use address rewriting or similar features to accomplish this.
- Thanks, that's very promising. So this would mean keeping AAD Connect for syncing local AD account passwords as we currently do with two forests.
Do you know of any good information on how to go about using Aliases and address rewriting to get all users having email@a.com ?As you will keep your on-premises Exchange at least for recipient management, you can use it as an address rewrite gateway:
Exchange Online also supports Address Rewrite, which routes outgoing email through an on-premises gateway that modifies the addresses. This feature enables you to hide sub-domains, make email from a multi-domain organization appear as a single domain, or make partner-relayed email appear as if it were sent from inside your organization. Administrators configure custom email routing within the Exchange admin center (EAC).
https://technet.microsoft.com/en-us/library/exchange-online-mail-flow.aspx