Outlook clients are still pointing to On-premise Exchange server - Office 365

Posted by Unknown on 13:34
33
    Office 365 Migration  - Internal Outlook clients are pointing to On-premise exchange server

The migration was completed successfully, all the MX and auto-discover records are set to office 365 in our DNS portal, We tested that the Outlook clients are connecting from outside the organization are able to auto-discover the mailbox settings and able to connect to their Office365 mailbox.

Now the problem started, when the on-premise users are trying configure their outlook client, it is routing to their On-premise exchange server.

What to do ? just two steps to go , to make sure your on-premise clients connect to their Office 365 mailbox.


  1. Create a CName record for Auto Discover in your internal DNS pointing to the office 365 auto discovery server created in your Public DNS portal.
                                                         Or
    From outside your on-premise network ping autodiscover.yourdomain.com ( Note: Yourdomain.com should be replaced with your organization namespace), note down the IP address it is pointing , then come back to your local DNS and create a A record pointing to the IP which you noted down. (autodiscover.yourdomain.com should point to the IP which was resolved during ping operation from outside network).
  2. Once one of the above record is created in your network, try to ping from your internal network and check if it is pointing to Outlook.com autodiscover server.
  3. Now you need to make your AutoDiscoverServiceInternalURI to null on your CAS server, use below command to make it null.

    Set-ClientAccessServer –Identity “your CAS servername” –AutoDiscoverServiceInternalUri $NULL
Noe go back and try creating the outlook profile again , now it should discover the Office365 mailbox server settings with out any issues.

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33 comments:

  1. Unknown28 April 2016 at 02:30

    Hi, Very nice description about Office 365 Migration.
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    then i always get the new interesting and important information in your web blog.

    Thank You

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    ReplyDelete
    Replies
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      Nakita ko ang isang puna dito ilang linggo na ang nakakaraan tungkol kay Dr Akhere at nagpasya akong makipag-ugnay sa kanya tulad ng itinuro, salamat sa lalaking ito sa pagdala ng kagalakan sa akin tulad ng hinahangad ko. Sinunod ko ang mga tagubilin na ibinigay niya sa iba pa upang maibalik ang aking kasintahan na iniwan ako at ang mga bata sa loob ng 3 taon ngayon, ngunit salamat kay Dr Akhere dahil bumalik sila sa akin ngayon para sa kabutihan at masaya kaming magkasama. mangyaring makipag-ugnay sa kanya para sa tulong din kung may problema sa relasyon sa pamamagitan ng email sa: AKHERETEMPLE@gmail.com o tumawag / whatsapp: +2349057261346. At magpatotoo para sa iyong sarili.

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    2. Anonymous12 March 2022 at 20:38

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    If anyone wonders how to import pst to office 365 I can recommend this service: http://www.safepstbackup.com/pst-migration-tool-migrate-from-outlook-to-office-365.aspx

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  3. CleverGhost16 January 2017 at 13:38

    Not able to get that command working in Powershell

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  4. Chris V6 July 2017 at 21:22

    Thank you! this helped greatly

    ReplyDelete
  5. Unknown23 October 2017 at 03:50

    What about during the migration? Some users are still on-premise while others are migrated. The migrated users revert back. If we set AutoDiscoverServiceInternalUri to $NULL, will the on-premise uses still be able to connect to the on-premise server?

    ReplyDelete
  6. Unknown5 March 2018 at 01:24

    Office 365 Migration blog post is very useful thanks for sharing.
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  7. Unknown26 July 2018 at 11:13

    Thanks! This did the trick even when the more common registry edits didn't help at all.

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  8. Pekson Scott25 March 2019 at 01:08

    Thanks !!
    Your blog post is very helpful for Office 365 mailbox server settings. so user can visit outlook not connecting to server for best info.


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  28. Lukas Angelika3 November 2021 at 04:54

    Nakita ko ang isang puna dito ilang linggo na ang nakakaraan tungkol kay Dr Akhere at nagpasya akong makipag-ugnay sa kanya tulad ng itinuro, salamat sa lalaking ito sa pagdala ng kagalakan sa akin tulad ng hinahangad ko. Sinunod ko ang mga tagubilin na ibinigay niya sa iba pa upang maibalik ang aking kasintahan na iniwan ako at ang mga bata sa loob ng 3 taon ngayon, ngunit salamat kay Dr Akhere dahil bumalik sila sa akin ngayon para sa kabutihan at masaya kaming magkasama. mangyaring makipag-ugnay sa kanya para sa tulong din kung may problema sa relasyon sa pamamagitan ng email sa: AKHERETEMPLE@gmail.com o tumawag / whatsapp: +2349057261346. At magpatotoo para sa iyong sarili.









































































    Nakita ko ang isang puna dito ilang linggo na ang nakakaraan tungkol kay Dr Akhere at nagpasya akong makipag-ugnay sa kanya tulad ng itinuro, salamat sa lalaking ito sa pagdala ng kagalakan sa akin tulad ng hinahangad ko. Sinunod ko ang mga tagubilin na ibinigay niya sa iba pa upang maibalik ang aking kasintahan na iniwan ako at ang mga bata sa loob ng 3 taon ngayon, ngunit salamat kay Dr Akhere dahil bumalik sila sa akin ngayon para sa kabutihan at masaya kaming magkasama. mangyaring makipag-ugnay sa kanya para sa tulong din kung may problema sa relasyon sa pamamagitan ng email sa: AKHERETEMPLE@gmail.com o tumawag / whatsapp: +2349057261346. At magpatotoo para sa iyong sarili.

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