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Ramki-5805 avatar image
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Ramki-5805 asked KyleXu-MSFT edited

How Mailbox Provisioning works in Exchange Online.

Guys

Do you have or suggest me guide to have a knowledge on in-depth, how mailbox provisioning is happening in the backend ,after we assign the license to the users.

simple : how mailbox provisioning and de-provision works behind the scenes in office 365

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VictorHarrison-0598 avatar image
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VictorHarrison-0598 answered Ramki-5805 commented

Hey @Ramki-5805

Great question! There is not to much information available regarding what happens when a mailbox is provisioning on the backend. Typically after assigning a license to the user, the mailbox will of course provision into Exchange online itself but in addition to this it will also apply all the default and custom policies that have been set up in your tenant (compliance holds, mail-flow rules, spam rules, etc.). Another thing to factor is your DNS registrar. Most companies are not using the vanity domain with M365 which means that sometimes what takes longest to provision is your custom domain associated to the new mailbox that is being created. In this explanation, I am presuming that this licensed user is in the cloud and not apart of a hybrid deployment but if it is then there are a whole host of other things to consider. If you want to read more on some of the scenarios to consider when provisioning or deprovisioning a user I would check out the article below.

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@VictorHarrison-0598 : Thanks for your valuable time and update. Looks the article is missing on your update.

Also i heard , we do automate the mailbox provisioning via attribute editors and de-provisioning too.. is there any article which can guide me how to automate the mailbox provisioning over the scripts or attribute editors.

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Sorry about that, here is the link: https://www.vyapin.com/blog/office-365-exchange-online-deprovisioning-aspects

In order for me to answer your 2nd question could you confirm if you are running a hybrid configuration and if you are what server version you are running?


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Ramki-5805 avatar image Ramki-5805 VictorHarrison-0598 ·

Thanks for the link.

We are running hybrid with exchange 2016 N-1 CU

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