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So I was having issues with a users mailbox to the point where I couldn't solve what was wrong so I deleted the account. I recreated the account with the same email address. Now users trying to email the address are getting odd returns

Generating server: EMAILSERVER.example.local

550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found

Original message headers:

Received: from SI-SRV-EXCH.example.local ([::1]) by SI-SRV-Exch.example.local ([::1]) with mapi; Mon, 16 Jul 2012 21:21:41 -0700 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: binary From: Jeff Lastname To: example1 lastname Date: Mon, 16 Jul 2012 21:20:13 -0700 Subject: not able to connect to Thread-Topic: not able to connect to Thread-Index: AQHNY9Om6/bAzEFvb0KX+GOyZnLFAw== Message-ID: <4658C83BD7D57D4EBAB0F1336F78858503B2D35FD7@SI-SRV-Exch.example.local> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: <4658C83BD7D57D4EBAB0F1336F78858503B2D35FD7@SI-SRV-Exch.example.local> MIME-Version: 1.0

Is there a way of fixing this?

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Add this X500 address to this user:

/O=EXAMPLE_OU=First administrative group/cn=recipients/
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The end of your example is wrong. It should be /cn=username – smithian Oct 17 '12 at 18:43
The key is to add the LegacyExchangeDN value as an X500 address on the user object, incorrect syntax in the example or not. – joeqwerty Oct 17 '12 at 20:44

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