Reporting Exchange Online Mailbox Permissions

Exchange Online makes it easy to assign delegated permissions for user and shared mailboxes. But permissions assigned to people might not be still necessary, so it’s good to do a periodic check. In this post, we describe a script to scan for permissions on Exchange Online user and shared mailboxes and highlight non-standard permissions in a report generated as a CSV file.

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Setting Custom Recipient Limits for Exchange Online Mailboxes

Exchange Online now supports a custom recipient limit for mailboxes of between 1 and 1000. The limit controls the maximum number of recipients a mailbox can add to a message. Think of the fun you could have by setting the recipient limit on manager mailboxes to something small, like 6….

Three Ways to use PowerShell to Send a Welcome Message to New Office 365 Users

Multiple PowerShell modules are available to Office 365 administrators to automate common processes. In this case, we want to send a welcome message to new accounts. Three PowerShell modules are available, but what’s the best in terms of performance and ease of use? There’s only one answer and that’s Exchange Online.

Report Exchange Online Mailbox Quota Usage Over Set Threshold

Some Exchange Online mailboxes are quite small (2 GB for frontline users). Tenant administrators might want to monitor mailbox usage to make sure that quotas aren’t unexpectedly exhausted. This post explains how to use a PowerShell script to calculate the percentage of mailbox quota used and highlight the problem if a threshold is passed.

Making Sure Everyone’s Covered by an Office 365 Supervision Policy

Although Office 365 supervision policies are intended to monitor a subset of user communications, usually involving specific groups of people, you might want to use a policy to monitor all email. In that case, how do you make sure that your policy has everyone in scope? The problem is that supervision policies don’t support dynamic distribution lists, so you need to do some work to build and maintain a distribution list containing all user mailboxes.