Re enabled Mailbox from Exchange 2016

Hi Experts exchange,

Last year one of resource left the organization and as management suggested I have disabled the user email id from exchange 2016 Mailbox and AD User is also disabled from Domain controller .

Again this employee is re joining the organization. I want to re enabled the mailbox and enabled the AD account from DC.
I enabled the AD account, however i'm unable to see the mailbox associate with AD account. Please help me out to re enabled the mailbox for particular user mailbox.

I used this switch, but not showing much. Performed as suggested by Microsoft KB articles. https://technet.microsoft.com/en-us/library/jj863438(v=exchg.160).aspx
Get-MailboxDatabase | Get-MailboxStatistics | Where { $_.DisplayName -eq "<display name>" } | fl DisplayName,Database,DisconnectReason

No results found for particular user in exchange mailbox.

The following procedure shows how to connect a deleted user mailbox to a user account. You can also use this procedure to connect linked mailboxes, resource mailboxes, and shared mailboxes that have been deleted to a user account.

1.In the EAC, navigate to Recipients > Mailboxes.

2.Click More More Options icon, and then click Connect a mailbox.

A list of mailboxes that are disconnected on the selected Exchange server in your Exchange organization will be displayed.

Note:

This list of disconnected mailboxes includes disabled mailboxes, deleted mailboxes, and soft-deleted mailboxes.  

3.Click the deleted mailbox that you want to connect a user to, and then click Connect.
4.In the window that asks if you’re sure that you want to connect the mailbox, click Yes.
A list of user accounts that aren’t mail-enabled is displayed.
5.Click the user that you want to connect the deleted mailbox to, and then click OK.
Exchange will connect the deleted mailbox to the user account that you selected.

Your help must be appreciated.
samiurrahiman mohdSr.Engineer-Server Management Messaging ExpertAsked:
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MASEE Solution Guide - Technical Dept HeadCommented:
Hi Sami,
Disabled and deleted mailboxes are retained in the mailbox database until the deleted mailbox retention period expires, which is 30 days by default. After the retention period expires, the mailbox is permanently deleted.
Please check these for more details.
http://msexchangeguru.com/2016/03/30/disconnected-mailboxes/
https://technet.microsoft.com/en-us/library/bb232039(v=exchg.150).aspx
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Valentina PerezExchange ServersCommented:
HI sami,

Try this command:

Get-MailboxDatabase | Get-MailboxStatistics | Where { $_.DisconnectReason -eq "Disabled" } | ft DisplayName,Database,DisconnectDate

Do you have any results?

Regards
Valentina
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samiurrahiman mohdSr.Engineer-Server Management Messaging ExpertAuthor Commented:
Hi,

As per the knowledge base article: http://msexchangeguru.com/2016/03/30/disconnected-mailboxes/
I executed these commands, but not showing associated mailbox for particular AD user. :(

Get-MailboxDatabase | Get-MailboxStatistics | Where { $_.DisconnectReason -eq “SoftDeleted” } | ft DisplayName,Database,DisconnectDate
Get-MailboxDatabase | Get-MailboxStatistics | Where { $_.DisconnectReason -eq “Disabled” } | ft DisplayName,Database,DisconnectDate

Thanks-sami
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MASEE Solution Guide - Technical Dept HeadCommented:
Please check the properties of mailbox database.  "Keep deleted mailboxes for (days)". Command will show you results based on the settings here.
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samiurrahiman mohdSr.Engineer-Server Management Messaging ExpertAuthor Commented:
DB-settingsAs you suggested, I have verified the settings DB.

Keep deleted Mailboxes - 30 days.

Is there any other way to get re enabled the mailbox after re-joining the organization employee.

Thanks-Sami
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samiurrahiman mohdSr.Engineer-Server Management Messaging ExpertAuthor Commented:
One more question here -

Should we change the parameter 30 days to 120 days or 365 days?

For Keep deleted Mailboxes - 30 days

Thanks-Sami
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MASEE Solution Guide - Technical Dept HeadCommented:
if you have enough storage you can change. You can refer this to properly size your server.
https://gallery.technet.microsoft.com/office/Exchange-2013-Server-Role-f8a61780
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MASEE Solution Guide - Technical Dept HeadCommented:
Enough information to confirm answer.
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