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Exchange 2010 - OWA - The email address that you entered couldn't be found

Getting the message below when trying to send (via OWA 2010) to a user that was deleted and then recreated. If the user is chosen from the Address Book it works OK, but it is like there is an incorrect cached copy of the address in OWA that is failing.
Can I clear, rebuild\fix OWA and\or exchange 2010 somehow? I have rebuilt the OAB.
Thanks

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The email address that you entered couldn't be found. Check the address and try resending the message. If the problem continues, please contact your helpdesk.

Diagnostic information for administrators:
Generating server: EX1.SLS.LOCAL
IMCEAEX-_O=ST+20LAURENCE_OU=First+20Administrative+20Group_cn=Recipients_cn=08DAVHANH@domain.local
#550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##
Original message headers:
Received: from EX1.SLS.LOCAL ([::1]) by EX1.SLS.LOCAL ([::1]) with mapi id
14.02.0347.000; Thu, 26 Sep 2013 12:16:16 +0100
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: Theodore SPENCE <thespe@domain.local>
To: Hannah Davenport
<IMCEAEX-_O=ST+20LAURENCE_OU=First+20Administrative+20Group_cn=Recipients_cn=DAVHANH@domain.local>
Subject: Test 2
Thread-Topic: Test 2
Thread-Index: Ac66qdCcotiTSVlJTMKdQu2fqaqWxQ==
Date: Thu, 26 Sep 2013 12:16:15 +0100
Message-ID: <44AE1D8F1F8B1C4586778C759FD9776729C05C01@EX1.SLS.LOCAL>
Accept-Language: en-GB, en-US
Content-Language: en-GB
X-MS-Has-Attach:
X-MS-TNEF-Correlator: <44AE1D8F1F8B1C4586778C759FD9776729C05C01@EX1.SLS.LOCAL>
MIME-Version: 1.0
X-Originating-IP: [10.53.0.51]

ASKER CERTIFIED SOLUTION

Nick Rhode

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Mark Galvin

We have that too. Its the Outlook Address Cache (also known as 'Auto Complete') and its a pain in the ***.

You can use the method above to delete single addresses. This is what we have to do.

Thanks
Mark

Pete

ASKER

can you clear outlook address cache's remotely? or by account? we have a single mail server with 1500 users.

thanks, it does work though!

Mark Galvin

Per user as it is stored in the users outlook! like I said pain!!

Nick Rhode

I had the same issue with a user with a corrupt mailbox last year. I had to put out the fire as it came in and did not find a way to do it. I have read about ways to flush their autocomplete in general (that means all addresses and if I did that I would have alot more trouble because the users would blow up) but did not come across an actuall how-to.