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How to fix Outlook “You do not have the permission to send the message on behalf of the specified user”

Consider the following scenario: And if you are running Outlook in Online mode, you receive the following error message: You do not have the permission to send the message on behalf of the specified users. In this configuration, Exchange Server requires Send As permissions to send the email message. If you don’t have Send As Read More

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How to Configure S/MIME in Exchange Online

In this article Step 1: Set up and publish S/MIME certificates Step 3: Sync user certificates for S/MIME into Microsoft 365 Step 4: Configure policies to install the S/MIME extensions in web browsers Step 5: Configure email clients to use S/MIME S/MIME (Secure/Multipurpose Internet Mail Extensions) is a widely accepted protocol for sending digitally signed Read More

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How to Fix Free/Busy not Available in Outlook Meeting Scheduling Assistant

When adding attendees to my meeting invitation, for some of the attendees, their free/busy status shows as “No Information” in the Scheduling Assistant. Why is this and how can I make Outlook retrieve this information again for this attendee? There could be several reasons why Outlook was unable to retrieve the Free/Busy status of an Read More

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Customize Online Archive and Deletion Policy for Exchange 365

To retain and delete emails, we recommend you use Microsoft 365 retention policies and retention labels rather than the older messaging records management (MRM) from Exchange Online. However, a valid reason to still use this older feature is to automatically move emails from a user’s primary mailbox to their archive mailbox. You might also need to use MRM Read More

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How to Enable Online Archive for All users With PowerShell

The In-Place Archive that you get with Exchange Online, provides your users with additional storage space. With PowerShell, we can enable the archive mailboxes quickly for all users. Load the Exchange Online PowerShell module If the module is already installed, you can typically skip this step and run Connect-ExchangeOnline without manually loading the module first. After you’ve installed Read More