Mailbox is currently unavailable in EMC and EMS – Exchange 2010

 

Mailbox is currently unavailable in EMC and EMS – Exchange 2010

Scenario:

• Unable to connect to a mailbox which wasn’t disconnected or deleted.
• When trying to access the mailbox , e.g., opening the mailbox calendar folder

        Below error occurs,

 Error(s):

        “The set of folders can’t be opened, the attempt to log-in the Microsoft exchange server has failed”

 

• Mailbox export to pst also failed,
• Tried login to the user mailbox via owa and outlook,
• Both failed with an error stating unable to connect to mailbox

 

Solution:

•     Run MAPI connectivity test on the user’s mailbox to check if everything is fine with the mapi connectivity,

 

Test-MAPIConnectivity “tober” | fl

 

RunspaceId : c55b4756-38d9-4bcd-81dd-d0800ec6ce7d

Server     : W8-EXCH-MBOX-E1

Database   : MBOX1 DB2

Mailbox    : tober

Result     : *FAILURE*

Latency    : 00:00:00

Error      : [Microsoft.Exchange.Data.Storage.StorageTransientException]: Cannot open mailbox /o=xxxxxx/ou=Exchange A

ministrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=xxxxxx/cn=Microsoft System A

tendant. Inner error [Microsoft.Mapi.MapiExceptionMailboxQuarantined]: MapiExceptionMailboxQuarantined: U

able to open message store. (hr=0x80004005, ec=2611)

Diagnostic context:

Lid: 55847   EMSMDBPOOL.EcPoolSessionDoRpc called [length=152]

Lid: 43559   EMSMDBPOOL.EcPoolSessionDoRpc returned [ec=0xA33][length=274][latency=0]

Lid: 32881   StoreEc: 0xA33

Lid: 50035

Lid: 64625   StoreEc: 0xA33

Lid: 50128

Lid: 1494    —- Remote Context Beg —-

Lid: 26426   ROP: ropLogon [254]

Lid: 22787   Error: 0x0

Lid: 13032   StoreEc: 0x8004010F

Lid: 25848

Lid: 7588    StoreEc: 0x8004010F

Lid: 25840

Lid: 6564    StoreEc: 0x8004010F

Lid: 27395   Error: 0x0

Lid: 61867

Lid: 37291   StoreEc: 0xA33

Lid: 53675

Lid: 12716   StoreEc: 0xA33

Lid: 20794

Lid: 28474   StoreEc: 0xA33

Lid: 22330   dwParam: 0x0        Msg: 14.03.0174.001:W8-EXCH-MBOX-E1

Lid: 1750    —- Remote Context End —-

Lid: 50288

Lid: 23354   StoreEc: 0xA33

Lid: 25913

Lid: 21817   ROP Failure: 0xA33

Lid: 26297

Lid: 16585   StoreEc: 0xA33

Lid: 32441

Lid: 1706    StoreEc: 0xA33

Lid: 24761

Lid: 20665   StoreEc: 0xA33

Lid: 25785

Lid: 29881   StoreEc: 0xA33

Identity   :

IsValid    : True

 

Mailbox is quarantined

• Check the registry entry to find if the mailbox is found under the appropriate quarantined sub key,

HKLM\SYSTEM\CurrentControlSet\Services\MSExchangeIS\<Server Name>\Private-{db guid}\QuarantinedMailboxes\{mailbox guid}

 

• Get the Mailbox and database GUID via powershell

 

Get-mailbox “MailboxName” | fl *GUID*

 

• Deleted the mailboxguid subkey
• Dismounted and remount the database
• Again Run the Mapi connectivity test to confirm successful report
• Now you can successfully login and send emails
• Would Suggested to move the mailbox to a different database on the same/different server to eliminate any corruption

Possible Cause for the mailbox to be quarantined is due to the poison messages

Support Links,

http://technet.microsoft.com/en-us/library/gg490642(v=exchg.80).aspx

http://support.microsoft.com/kb/2603736

Regards,

Ganesh G