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tankadmin avatar image
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tankadmin asked ZhengqiLou-MSFT commented

Exchange -AD Design Recommendation

Hi All,

 We have two domains. One production and one development.

   1. Prod.mydomain.com
    2. dev.mydomain.com

 Both have an Exchange environment and production has moved to 0365 and has an on-premise exchange server ( hybrid server)

I need to decommission this dev exchange environment.

How do I allow dev.mydomain.com users to test applications using O365 or On-premise Exchange server?
They only required test the mail functionality.

As




office-exchange-server-mailflow
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AndyDavid answered AndyDavid edited
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ZhengqiLou-MSFT avatar image
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ZhengqiLou-MSFT answered

Hi @tankadmin ,

May I ask what tests are you going to do? On-prem or Online?
I'm a bit confused, if you only want to do some tests with mail function, why not creating a test account in the product server..?

Or you could create a O365 account and sync with your AD accounts like Andy said: How to use SMTP matching to match on-premises user accounts to Office 365 user accounts for directory synchronization

Sorry for these stupid questions, if you could please let know more about this issue, thanks..

Best regards,
Lou


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tankadmin answered ZhengqiLou-MSFT commented

Hi All,

Thank you. This Dev environment is an internal-only AD domain for application testing. Simply test SMTP email functionality and login to the OWA and check these emails. ( On-prem only)

As

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If its on-prem only, then no need to create anything in 365, unless you want to receive and send mail through 365. IN that case, follow my steps above


Add dev.mydomain.com as an accepted domain to the on-prem Exchange Server:
https://docs.microsoft.com/en-us/exchange/mail-flow/accepted-domains/accepted-domains?view=exchserver-2019

Add dev.mydomain.com as a domain in 365: https://docs.microsoft.com/en-us/microsoft-365/admin/setup/add-domain?view=o365-worldwide

Set DNS records ( Mx / autodiscover tc.. ) to 365

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Hi @tankadmin ,

If you gonna decommission the dev server and use the accounts like user@dev.mydomain.com, you could do as the docs above.
Or you will be not able to use them to test the mailflow cause there are no mailboxes for these users.

Regards,
Lou

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Hi @tankadmin ,

It has been a long time since last reply, did these suggestions help you? If the above suggestion helps, please click “Accept as answer” to mark helpful reply as an answer to close this thread. Your action would be helpful to other users who encounter the same issue and read this thread.

Regards,
Lou


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