Re-instating AD user accounts and mailboxes removed using remove-mailbox -identity "/o=MYORGANISATION/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=USERNAME" -confirm:$false

I mistakenly included a few users in a script  to remove AD user accounts and their mailboxes  remove-mailbox -identity "/o=MYORGANISATION/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=USERNAME" -confirm:$false.

Is there a quick way of getting back these. I know I should use disable instead of remove but I was doing housekeeping on accounts that had been dormant for over a year and wasn't aware how these 3 accounts sneaked in there.

Any help appreciated.
GospodinRasputin.
GospodinRasputinAsked:
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MAS (MVE)Connect With a Mentor Technical Department HeadCommented:
Run the below command to see the mailboxes in the disconnected mailbox.
Get-mailboxdatabase | Clean-MailboxDatabase

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If you are running Exchange2013 you have to run
update-StoreMailboxState

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https://blogs.technet.microsoft.com/nawar/2014/11/20/clean-mailboxdatabase-and-exchange-2013/

Recover the deleted accounts from AD database
http://social.technet.microsoft.com/wiki/contents/articles/5549.recover-active-directory-deleted-items-using-ldp-exe.aspx
https://technet.microsoft.com/en-us/library/dd379509(v=ws.10).aspx

Then connect the mailbox to the recovered AD users
https://technet.microsoft.com/en-us/library/bb123490(v=exchg.141).aspx
https://technet.microsoft.com/en-us/library/jj863439(v=exchg.150).aspx
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GospodinRasputinAuthor Commented:
Hi MAS,
Are you saying that though I used remove and not disable, that the mailboxes are still only disconnected and they can still be gotten back by issuing the Clean-MailboxDatabase commandlet???

Yes, I carried out the removal on a Exchange 2013.
Thanks
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GospodinRasputinAuthor Commented:
Also, in your first link above, it says that Update-StoreMailboxState attempts to "to synchronize the mailbox state for a mailbox in the Exchange mailbox store with the state of the corresponding Active Directory user account". In my case, the AD accounts were also removed so there would be nothing to synchronize with.

Please clarify. Thank you
GospodinR
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MAS (MVE)Technical Department HeadCommented:
This expert suggested creating a Gigs project.
If you delete a user your mailbox still exists in your mailbox server.

if you just want mails. you can restore that mails by connecting that mailbox to another user.
Explained here
https://technet.microsoft.com/en-us/library/jj863439(v=exchg.150).aspx
https://www.youtube.com/watch?v=hwEiK_DS0xU
Check this video

Thanks
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GospodinRasputinAuthor Commented:
Sorry you misunderstood me.
By using the remove commandlet on Exchange 2013, i delete both the mailbox and the user account from AD.

I did not simply delete my user account from AD.
Thanks
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MAS (MVE)Technical Department HeadCommented:
Remove-Mailbox -Identity mymailbox -Permanent $true
This command will delete the mailbox permanently
If you dont use this "-permanent" switch your mailbox will retain for 30days by default.

if you want immediately show the disconnected mailboxes run the below command.
Get-MailboxStatistics -Database database1 | Where { $_.DisconnectReason -ne $null } | ForEach { Update-StoreMailboxState -Database $_.Database -Identity $_.MailboxGuid -Confirm:$false }

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Change the database name

Thanks
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