Are some of your Exchange Online users encountering problems while trying to send or receive emails in their mailboxes? Have you verified if they're dealing with the 'Mailbox Quota Exceeded' error? If you're yet to pinpoint these mailboxes, you can employ the following methods to effectively manage the Microsoft 365 mailbox size quota to avoid being exceeded.
Windows PowerShell Connect-ExchangeOnline
Get-Mailbox | ForEach-Object { $mailboxStats = Get-MailboxStatistics -Identity $_.UserPrincipalName; [PSCustomObject]@{ DisplayName = $_.DisplayName; TotalItemSize = $mailboxStats.TotalItemSize; IssueWarningQuota = $_.IssueWarningQuota; ProhibitSendQuota = $_.ProhibitSendQuota; ProhibitSendReceiveQuota = $_.ProhibitSendReceiveQuota} } TotalItemSize ProhibitSendReceiveQuota ProhibitSendQuota and IssueWarningQuota.
Get the entire list of user mailboxes with mailbox size, prohibit send quota, prohibit send receive quota, etc.
You can also use the custom-made report only for mailboxes over the warning storage quota.
AdminDroid Exchange reporting tool stands as an all-inclusive solution for Microsoft 365 admins, empowering seamless identification and management of Exchange Online mailbox size quota without the necessity of intricate PowerShell scripts.
Effortlessly locate all Exchange Online mailboxes with their respective sizes, consolidated in a single and accessible location.
Swiftly manage mailboxes over the size quota and allocate storage resources optimally with the help of detailed reports on mailboxes.
Access the dedicated undelivered emails report for detailed information on Microsoft 365 undelivered emails, including the subject, sender address, recipient email, and received time.
Gain insights into the total number of archived mailboxes, their size, and the percentage of storage occupied.
Schedule and export Exchange Online mailbox sizes to csv, delivered directly to your inbox, providing constant updates on Office 365 mailbox quota.
Create an alert policy to track daily mailbox storage and promptly address quota-related issues for efficient storage management.
Overall, AdminDroid monitors Microsoft 365 mailboxes by seamlessly enabling the tracking and management of mailbox sizes, providing uninterrupted control in managing your Exchange Online. Effectively prevent storage issues and manage mailbox sizes in your Microsoft 365 environment. Gain detailed insights, track changes, and optimize storage allocation with the help of AdminDroid.
This error occurs when the mailbox ‘Prohibit Send Quota’ is achieved.
Set-Mailbox <UserId> -ProhibitSendQuota <Value>This error occurs when the user Exchange Online mailbox storage is full.
This error occurs when your Exchange Online storage is over the Issue Warning Quota.
Set-Mailbox <UserId> -IssueWarningQuota <Value>This error indicates that the allocated storage limit for the user mailbox has been surpassed.
This error indicates that a user's mailbox in Microsoft 365 has exceeded the allocated storage capacity that was assigned.
When the Exchange Online mailbox is full, it rejects any incoming mail and sends a non-delivery report (NDR) to the sender. Also, you experience the following issues if your mailbox storage quota is exceeded.
By proactively managing your mailbox size, you can prevent these issues and maintain uninterrupted email communication.
AdminDroid offers a convenient solution for efficiently tracking undelivered emails in Exchange Online mailboxes.
The size limit of an Exchange Online mailbox depends on your Microsoft 365 plan. By default, the mailbox limits in Microsoft 365 include a warning limit of 98% of the mailbox capacity, a send limit of 99% of the mailbox capacity, and a send/receive limit of 100% of the mailbox capacity.
Admins can configure and adjust the storage quota settings for user mailboxes to ensure sufficient storage capacity is allocated.
The Exchange admin center (EAC) cannot configure storage quotas, even though it is mentioned in Microsoft's support documentation that the EAC can be used to do the operation
However, if you are an Exchange Online admin who needs to configure storage quotas, We recommend you use PowerShell to configure storage quotas.
To set the Issue warning quota, use the below cmdletSet-Mailbox -Identity <identity> -IssueWarningQuota <value>
To set the prohibit send quota, use the below cmdletSet-Mailbox -Identity <identity> -ProhibitSendQuota <value>
To set the prohibit send receive quota, use the below cmdletSet-Mailbox -Identity <identity> -ProhibitSendReceiveQuota <value>
To get the mailbox size and quota using PowerShellGet-Mailbox <Identity> | Format-List IssueWarningQuota, ProhibitSendQuota, ProhibitSendReceiveQuota
*Replace <Identity> with the name, email address or alias of the mailbox. And set value for IssueWarningQuota, ProhibitSendQuota and ProhibitSendReceiveQuota. The value range for any of the storage quota settings is from 0 through 2047 gigabytes (GB).
You may also combine the parameters in a single cmdlet and execute.
By using AdminDroid’s Schedule Reports, administrators can proactively monitor and manage user mailbox quotas effectively.
The Mailbox Quota report is now set to receive regular updates based on frequency, providing the latest information on users' mailbox quotas.
This issue occurs if the outlook mailbox size exceeds the mailbox quota. It's important to note that the size displayed to the user does not account for the Recoverable Items folder. The folder which contains deleted items and other recoverable data, is not visible to users.
As a result, the displayed Exchange Online mailbox quota may not accurately reflect the true size, including the content within the Recoverable Items folder. To recover from this issue, verify the storage quotas of the user's mailbox and run the following cmdlet.
Get-MailboxStatistics user@contoso.com | fl StorageLimitStatus, TotalItemSize, TotalDeletedItemSize
If the TotalItemSize value surpasses the ProhibitSendReceiveQuota value, or if the TotalDeletedItemSize value exceeds the RecoverableItemsQuota value, consider deleting items from the mailbox.
Recoverable Items Managed Right: Keeping Your Office 365 Mailbox Size Tight!
AdminDroid also offers the ability to track the recoverable storage quota, including the recoverable items quota and recoverable items warning quota.
AdminDroid: Streamlining In-Place Archive Mailbox Management with Comprehensive Reporting
AdminDroid can generate detailed reports on In-place archive mailboxes, displaying key information including archive mailbox size, archive quota, archive warning quota, etc. It provides an efficient solution for managing archive mailboxes effectively.
Mailbox exceeding the size quota is crucial in effective Exchange Online management. You can get the mailbox and its storage used from Microsoft 365 in the below ways:
However, the Microsoft 365 admin center and Exchange admin center requires manual searching of mailboxes and PowerShell does not offer an easy way to find and manage the mailbox over the size quota.
AdminDroid: Streamlining mailbox monitoring over warning quota, simplifying the search.
Use the dedicated Mailbox Over Warning Quota resided under to list the mailboxes which are over the warning quota.
We recommend utilizing the Quick Schedule feature which periodically sends the report to your inbox. Follow these steps to activate the quick scheduler option.
When the mailbox size exceeds 50 GB, organizations are left with two choices that they can upgrade their Office 365 subscription or remove data from the mailbox. However, it is important to recognize that deleting data may not always be a straightforward or preferred solution.
Note: Business Basic and Business Standard plans to offer a mailbox storage limit of 50 GB. Upgrading to Enterprise E1, E3, or E5 plans will double the storage capacity to 100 GB automatically.
To enable an Auto-expanding archive for a mailbox, run the following cmdlet after connecting to the Exchange Online module.-Enable-Mailbox <user mailbox> -AutoExpandingArchive
AdminDroid: Simplifying Mailbox Archive Settings with Detailed Reporting
With AdminDroid, it's effortless to identify users with auto-expanding archive mailboxes. The user-friendly interface and pre-configured reports make it simple to identify the archive status of mailboxes, streamlining your mailbox management tasks.
Proper management of Exchange Online mailbox size is a key to efficient mailbox operations. To keep your mailbox size under control, consider the following:
By following these practices, you can efficiently manage your mailbox size, optimize storage usage, and ensure smooth management within the constraints of Exchange Online storage quota.
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