Jan 23 2018
05:29 AM
- last edited on
Feb 01 2023
11:11 AM
by
TechCommunityAP
Jan 23 2018
05:29 AM
- last edited on
Feb 01 2023
11:11 AM
by
TechCommunityAP
Current setup is 2 forests with 2 exchange servers, 2 domains linked via trust. Both Exchange servers are completely separate.
We have been running AAD sync on one member server (in domain a )that syncs domain users from BOTH forests to our Office 365 Tenant.
Currently the on premise exchange servers each receive mail for their respective domain users, a.com and b.com.
I would like to migrate via minimal exchange hybrid each exchange forest to O365, it seems that I would then need to keep both servers on-premise to manage users etc.
Once each exchange is hybrid and mailboxes have been migrated for all users - how possible/easy at this point would it be to allow all users to use domain a.com email address ( and to have b.com as alias )
Jan 23 2018 10:32 AM
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.
Jan 24 2018 01:19 AM - edited Jan 24 2018 01:19 AM
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.
Jan 24 2018 04:19 AM - edited Jan 24 2018 04:23 AM
SolutionYes, you can ;)
Minimal hybrid supports multi-forest Exchange hybrid deployments.
https://blogs.technet.microsoft.com/exchange/2016/06/24/hcw-improvement-the-minimal-hybrid-configura... --> 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.
Jan 24 2018 05:45 AM
Jan 24 2018 05:55 AM
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
May 21 2018 02:58 AM - edited May 21 2018 02:59 AM
Hello Dominik.
Unfortunately the address rewriting feature is not supported on Exchange online.
MS expert said recently: "we don’t have any plan to bring Address Rewrite to Exchange Online."
There exists a non-MS cloud service that implements the sender address rewriting function for Office 365/Exchange online.
Best regards,
Victor Ivanidze
Jan 24 2018 04:19 AM - edited Jan 24 2018 04:23 AM
SolutionYes, you can ;)
Minimal hybrid supports multi-forest Exchange hybrid deployments.
https://blogs.technet.microsoft.com/exchange/2016/06/24/hcw-improvement-the-minimal-hybrid-configura... --> 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.