Forum Discussion
Few users having issue when receiving calendar invite (Recovery Mailbox -SubstrateHold - Full) .
sabir_rm007 Substrate data in this case should be teams 1:1 chat,private channel messages, group chats etc. It appears you have hold (litigitation/legal/inplace) enabled on the mailbox, which is why office 365 is trying to preserve teams chat data in the mailbox.
If there is a hold enabled on the mailbox, i dont think even mfcmapi can help. First you need to remove the hold and then proceed with deletion. When you remove the hold, based on the retention policy applied to the mailbox, items from recoverable items should start getting purged. You can run Start-Managedfolderassistant to queue running of managed folder assistant on the mailbox. In good old days you could run "Search-Mailbox -Identity mailbox@domain.com -SearchDumpsterOnly -DeleteContent" to purge content from recoverable items, but I guess Search-Mailbox was being discontinued last i checked. Ref article to get the mailbox ready : https://docs.microsoft.com/en-us/microsoft-365/compliance/delete-items-in-the-recoverable-items-folder-of-mailboxes-on-hold?view=o365-worldwide
sabir_rm007 Substrate data in this case should be teams 1:1 chat,private channel messages, group chats etc. It appears you have hold (litigitation/legal/inplace) enabled on the mailbox, which is why office 365 is trying to preserve teams chat data in the mailbox.
If there is a hold enabled on the mailbox, i dont think even mfcmapi can help. First you need to remove the hold and then proceed with deletion. When you remove the hold, based on the retention policy applied to the mailbox, items from recoverable items should start getting purged. You can run Start-Managedfolderassistant to queue running of managed folder assistant on the mailbox. In good old days you could run "Search-Mailbox -Identity mailbox@domain.com -SearchDumpsterOnly -DeleteContent" to purge content from recoverable items, but I guess Search-Mailbox was being discontinued last i checked. Ref article to get the mailbox ready : https://docs.microsoft.com/en-us/microsoft-365/compliance/delete-items-in-the-recoverable-items-folder-of-mailboxes-on-hold?view=o365-worldwide