Article ID: 2660178 - View products that this article applies to.
Consider the following scenario:
More than one mailbox has the same e-mail address. To resolve this issue, contact your administrator.
This issue occurs because the ECP incorrectly looks up the user by using a global scope. Therefore, two objects that have the same Simple Mail Transfer Protocol (SMTP) address are found.
To resolve this issue, install the following update rollup:
(https://support.microsoft.com/kb/2661854/ )Description of Update Rollup 2 for Exchange Server 2010 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about multi-tenant Exchange deployments, visit the following Microsoft website:
General information about multi-tenant Exchange deploymentsFor more information about the Hosting mode, visit the following Microsoft website:
General information about the Hosting modeFor more information about how to create a tenant organization, visit the following Microsoft website:
How to create a tenant organizationFor more information about the New-MailContact cmdlet, visit the following Microsoft website:
General information about the New-MailContact cmdlet
Article ID: 2660178 - Last Review: April 16, 2012 - Revision: 1.0