Changes around handling of mail users in Exchange Online

​Over an year ago, a blogged about the need to reconfigure mail users addresses due to directory sync only allowing for aliases from verified/accepted domains. Well, Office 365 is a constantly evolving system, and things have now changed. Synced objects will now preserve all their aliases, even external ones, and …

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Additional details about the new mailbox recovery method in Exchange Online

​Earlier this year, the Exchange team revealed a new method of recovering mailboxes in Exchange Online. Improvements were made for the case in which recovering the soft-deleted mailbox failed, or was not possible due to removal of the corresponding user object. In a nutshell, the new method allows you to …

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Some improvements around Inactive mailboxes

​Inactive mailboxes were first introduced almost two years ago in Exchange Online. They are a free and easy way to make sure mailbox data is preserved in order to meet legal requirements. And they are directly exposed to the eDiscovery, unlike other solutions. Now, Microsoft has made some improvements that …

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NonExistentMailboxException can simply mean that the mailbox in an inconsistent state

Here’s an issue that’s actually very easy to investigate and fix, but might get you puzzled if you are not looking in the right place. The symptoms were that several users were suddenly unable to get free/busy information, configure OOO, get MailTips, etc. Autodiscover was failing with 401 error; trying to …

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