on-prem user account matching with azure user

dirkdigs 921 Reputation points
2021-11-22T17:29:50.947+00:00

hi we have 50 users with cloud user account in azure/office 365
these user already have business basic license assigned so they have exchange online mailbox already created
if we want to run / setup azure ad connect between active directory and office 365 what needs to be done to match the accounts?
** We will also be migrating user exchange mailbox to office365/EXO
do we need to perform SMTP matching? I saw two types of matching (hard/soft) which one is correct for my scenario?
thanks,

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
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  1. Vasil Michev 95,666 Reputation points MVP
    2021-11-22T18:26:16.533+00:00
  2. KyleXu-MSFT 26,211 Reputation points
    2021-11-23T07:31:07.923+00:00

    @dirkdigs

    Whether you need a matching operation depends on what you want to do.

    If you just want to migrate Exchange on-premises mailbox to Exchange online and there doesn't exist conflicted account between local AD and Azure AD. You don't need to do any matching action. You could install AAD connect to sync local AD account to Azure AD, then migrate mailbox to Exchange online.

    If there exist local AD account use the same name of those Azure account. You could remove the local AD account, then writeback the Azure AD to local AD. You can also do a soft-match for them.

    If there doesn't exist conflicted account, but you want to sync Azure account to local AD for manage from local AD, you could follow this article.

    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

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  3. dirkdigs 921 Reputation points
    2021-11-26T22:52:35.83+00:00

    i added the custom dns domain to my user object
    i added my cusom dns domain to office 365
    i run azure ad connect
    but now we have 1 cloud user with upn suffix @keyman .onmicrosoft.com and 1 synced user with upn suffix @keyman .com
    the user has both upn suffix listed in on-prem AD,.

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  4. dirkdigs 921 Reputation points
    2021-11-29T17:12:48.603+00:00

    i also manually add custom *.onmicrosoft.com proxy address to my user object and did another sync. still creating duplicate account . smtp matching not working