I followed a few articles that said adding a custom x500 address would resolve the issue. this is what I have for his x500 custom address but still it doesn't work.
Diagnostic information for administrators: Generating server: ATMExchange.AalbersTool.local IMCEAEX-_O=AALBERSTOOL_OU=First+20administrative+20group_cn=Recipients_cnemail@example.com #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ## Original message headers: Received: from ATMEXCHANGE2.AalbersTool.local ([fe80::7941:ba35:3ccf:b70d]) by ATMExchange.AalbersTool.local ([fe80::bcac:ca43:ec2d:af46%11]) with mapi id 14.02.0247.003; Mon, 12 Mar 2012 17:07:29 -0400 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: binary From: Jim Dyck <firstname.lastname@example.org> To: Dave Meleg <email@example.com> Subject: x500 Thread-Topic: x500 Thread-Index: Ac0Ak600z2zhgs3fTpiPnmgcv7NedA== Date: Mon, 12 Mar 2012 17:07:28 -0400 Message-ID: <FA7EB63912CBA8459F46F7A0D61850BD35804F@atmexchange2.AalbersTool.local> Accept-Language: en-CA, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: <FA7EB63912CBA8459F46F7A0D61850BD35804F@atmexchange2.AalbersTool.local> MIME-Version: 1.0 X-Originating-IP: [192.168.1.177]
/O=Aalberstool.local/OU=FIRST ADMINISTRATIVE GROUP/CN=RECIPIENTS/CN=dave and also tried this /O=Aalberstool.local/OU=FIRST ADMINISTRATIVE GROUP/CN=RECIPIENTS/CNfirstname.lastname@example.org
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