Problem
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- Mailbox "user@domain.com" is full and retention policy is not moving old items to archive.
Troubleshooting
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- Checked the retention policy and it has only one tag, that moves items older than 1 year to archive and it´s type is "Default". So everything is ok with Retention Policy.
- Command "Get-Mailbox "user@domain.com" | FL *RetentionHoldEnabled*" releved that Retention Hold was enabled.
“Retention Hold” prevents the “Retention Policy” to run.
Solution
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- Disabled Retention Hold and started Retention Policy engine to run the Retention Policy. As follows:
PS C:\> Get-Mailbox "user@domain.com" | FL *RetentionHoldEnabled*
RetentionHoldEnabled : True
PS C:\> Set-Mailbox "user@domain.com" -RetentionHoldEnabled $false
PS C:\> Get-Mailbox "user@domain.com" | FL *RetentionHoldEnabled*
RetentionHoldEnabled : False
PS C:\> Start-ManagedFolderAssistant -Identity "user@domain.com"
PS C:\>
Documentation
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Retention hold
https://docs.microsoft.com/en-us/exchange/security-and-compliance/messaging-records-management/retention-tags-and-policies#retention-hold