If you get an undeliverable message back when you send calendar invites and get the error below:
Diagnostic information for administrators:
Generating server: xxxxxxxxxxxxxxxx.PROD.OUTLOOK.COM
User’s email address
Remote Server returned ‘554 5.2.0 STOREDRV.Deliver.Exception:QuotaExceededException.MapiExceptionShutoffQuotaExceeded; Failed to process message due to a permanent exception with message [BeginDiagnosticData]Move/Copy messages failed………..
All you need to do is to free the user’s email storage space. So how to delete the Recoverable items to free the space? Try this:
Access EAC > Roles > Admin Roles > Discovery Management
https://admin.exchange.microsoft.com/#/adminRoles
Under Permissions, check “Mailbox Import Export”
Under Assigned, add the Admin account and Save
Then Run the below PowerShell commands, strictly one by one
Set-Mailbox user@domain.com -LitigationHoldenabled $False -SingleItemRecoveryenabled $False -RetainDeletedItemsFor 0
Set-Mailbox user@domain.com -RetentionHoldEnabled $False
Set-Mailbox user@domain.com -ElcProcessingDisabled $False
Set-Mailbox user@domain.com -RemoveDelayHoldApplied
Set-Mailbox user@domain.com -RemoveDelayReleaseHoldApplied
#Check and ensure no hold is applied. Also ElcProcessingDisabled should be False (Take screenshot of the below and attach it to this email)
Get-Mailbox user@domain.com| fl *hold*,elcprocessingdisabled,Retentionpolicy
#Once confirmed then run the below commandlet
Start-ManagedFolderAssistant user@domain.com -HoldCleanup
Allow a couple of hours for the changes to take effect
Re-run the below if required.
Start-ManagedFolderAssistant user@domain.com -HoldCleanup
To get the statistics of Recoverable Items
Get-MailboxFolderStatistics user@domain.com -FolderScope RecoverableItems | fl Identity,FolderSize,FolderandSubfoldersize
Fall in love with Mac 