Managing quarantined emails in Microsoft 365 is essential for ensuring secure and efficient communication. Microsoft 365, powered by Exchange Online Protection (EOP), automatically detects and quarantines suspicious emails flagged as spam, phishing attempts, or malware. However, legitimate emails are sometimes marked as false positives, requiring manual review and release.
This article provides a step-by-step guide to checking, managing, and releasing quarantined emails using the Microsoft 365 Security & Compliance Center, Outlook Web App, and PowerShell. It also covers best practices for maintaining email security and streamlining operations.
Quarantined emails are messages blocked by Exchange Online Protection because they are identified as potential threats. These emails are isolated to prevent harm while allowing administrators and users to review them.
Reasons for Quarantine:
Retention Period:
End-users can manage quarantined emails directly from their Outlook web interface.
Administrators can use PowerShell for bulk actions and automated management of quarantined emails.
1. Connect to Exchange Online:
Connect-ExchangeOnline
2. List Quarantined Emails:
Get-QuarantineMessage -PageSize 50
3.Release Specific Emails by ID:
Release-QuarantineMessage -Identity <MessageID>
4. Bulk Release Emails by Sender:
Get-QuarantineMessage | Where-Object { $_.SenderAddress -eq "example@domain.com" } | ForEach-Object { Release-QuarantineMessage -Identity $_.Identity }
1. Emails Not Showing in Quarantine:
2. Released Emails Not Delivered:
3. Repeated False Positives:
Effectively managing quarantined emails in Microsoft 365 ensures both security and efficiency in email communication. Administrators and end-users can utilize the Security & Compliance Center, Outlook Web App, or PowerShell to review and release legitimate emails quickly.
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