[EXCHANGE 2010-2016] Which OWA URL will be displayed

Nerv0uS-2948 21 Reputation points
2022-05-23T06:30:53.14+00:00

Hello everyone,

Which OWA URL will be displayed :

  • User's mailbox moved to 2016
  • User's mailbox remains on 2010

Technical :

All EXCHs are in DAG (1 DAG for mbx 2010 and 1 DAG for mbx 2016)

EXCH 2010 = CAS/HUB

EXCH 2010 = 2 MBX

EXCH 2016 = 3 CASES (all roles)

EXCH 2016 = 3 MBX

So, coexistence mode.

For me, the user will have the OWA 2016 in all cases displayed first.

Then once logged in, if his box is under 2016 he stays under OWA 2016, if his box is under 2010 then the OWA 2010 URL is displayed.

Thanks for the clarification. :)

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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Accepted answer
  1. Joyce Shen - MSFT 16,636 Reputation points
    2022-05-24T01:29:52.9+00:00

    Hi @Nerv0uS-2948

    Check the configuration for Exchange coexistence mode below:
    204810-image.png

    And the DNS:
    204818-image.png

    Then Exchange 2016 can proxy the request to 2010

    Detailed information can be seen here: Client Connectivity in an Exchange 2016 Coexistence Environment with Exchange 2010


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  1. Nerv0uS-2948 21 Reputation points
    2022-05-24T09:07:11.25+00:00

    Hi, @Joyce Shen - MSFT

    Thank's for you answer.

    Technically, i have already informations about the proxies requests from exch 2016 to 2010.

    But, which URL will be displayed when the users will browse https:\webmail.domain.com/owa ?

    --> EXCH 2010 mailbox user --> Show OWA URL 2016 (blue) --> Login --> Then show OWA URL 2010 (orange) --> Right ?
    --> EXCH 2016 mailbox user --> Show OWA URL 2016 (blue) --> Login --> Then show OWA URL 2016 (blue) --> Right ?

    URL show depend of the mailbox user location only ?

    OWA EXCHANGE 2010 :

    205027-image.png

    OWA EXCHANGE 2016 :

    205033-image.png

    Thank's a lot,