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tastisch's avatar
tastisch
Copper Contributor
Mar 10, 2021
Solved

Multi domain in Exchange Online

Good day together
I need help with my settings in Exchange Online. I manage several customer domains via Exchange Online and host various mailboxes of these companies. Now it is so that in the address book email addresses appear across companies, so that company A also sees the mailboxes of company B in the address book.
How can I prevent this?

Thanks for the help in advance.

Best regards
Christoph

admin
exchange online
office 365
  • MDadarkar's avatar
    MDadarkar
    Mar 10, 2021

    Hi tastisch 

     

    You have to create a policy to stop sharing your address book between domains.

    Please see the below links which will help to resolve your issue.

    https://docs.microsoft.com/en-us/exchange/address-books/address-book-policies/assign-an-address-book-policy-to-mail-users 

    https://docs.microsoft.com/en-us/exchange/address-books/address-book-policies/address-book-policies 

    https://www.azure365pro.com/how-to-implement-address-book-policies-in-office-365exchange-20132016-effectively/ 


    Thank you,

    Regards,
    MD

    Please do like and share this post, if my answer resolved your issue..

5 Replies

  • MDadarkar's avatar
    MDadarkar
    Brass Contributor
    Mar 10, 2021

    Hi tastisch 

     

    You have to create a policy to stop sharing your address book between domains.

    Please see the below links which will help to resolve your issue.

    https://docs.microsoft.com/en-us/exchange/address-books/address-book-policies/assign-an-address-book-policy-to-mail-users 

    https://docs.microsoft.com/en-us/exchange/address-books/address-book-policies/address-book-policies 

    https://www.azure365pro.com/how-to-implement-address-book-policies-in-office-365exchange-20132016-effectively/ 


    Thank you,

    Regards,
    MD

    Please do like and share this post, if my answer resolved your issue..

    • tastisch's avatar
      tastisch
      Copper Contributor
      Mar 10, 2021

      Hi MDadarkar 

       

      Thanks for your answer!
      Can I only crate address book policies through PowerShell?

       

      Best regards,

      Christoph

      • MDadarkar's avatar
        MDadarkar
        Brass Contributor
        Mar 10, 2021

        Hi tastisch 

         

        You can do it through GUI as well, but PowerShell is most effective and has so many features on it.

         

        I hope this is informative.

         

        Thx,

        Regards,

        MD

        please do like and share this post, if my answer resolved your issue..

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