exchange 2013 kurulumu

merhaba 2010 dan migration 2013 de kullanıcılardan içerden dışarıya mail atmaya çalıştığımda aşağıdaki gibi bir hata alıyorum

nedeni ne olabilir?

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The following organization rejected your message: doctor.netfactor.net.tr.

Diagnostic information for administrators:
Generating server: MAIL2.xxx.local
[email protected]
doctor.xxx.net.tr #554 5.1.2 Recipient address rejected: User unknown ##
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(20.0.0.105) with Microsoft SMTP Server (TLS) id 15.0.516.32; Wed, 1 Aug 2018
22:59:12 +0300
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with mapi id 14.03.0210.002; Wed, 1 Aug 2018 22:59:12 +0300
From: =?iso-8859-9?Q?Decc=F0lu?= <[email protected]>
To: "[email protected]" <[email protected]>
Subject: aaa
Thread-Topic: aaa
Thread-Index: AdQp0hx9y6SuCa/2QYiabCC8HU0y0A==
Date: Wed, 1 Aug 2018 19:59:11 +0000
Message-ID: <[email protected]>
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Content-Language: en-US
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Content-Type: multipart/alternative;
boundary="_000_3F93A60F7A1D8146B88A94F7579DEC1D03FDE1mailnetfactorloca_"
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