One of the mailboxes used in the environment for ticketing was unable to fetch and delete emails in a specific mailbox. Upon further investigation, it was found that the TotalDeletedItemSize was around 26 GB.
Get-Mailbox username |Get-MailboxStatistics |fl *Delete*As this mailbox didn’t require single item recovery , it was disabled using the below command.
Get-Mailbox username |Set-Mailbox -SingleItemRecoveryEnabled $falseIt takes 60 mins to take into effect the change.After an hour the below command was executed to purge the recovery items.
Search-Mailbox username -SearchDumpsterOnly -DeleteContentThe purge gradually deleted the items. And the mailbox was back to normal in receiving meeting requests.