Applies to: Exchange Server 2007
Topic Last Modified: 2008-03-13

This topic provides information about how to troubleshoot Microsoft Exchange Server 2007 Setup if Setup fails while installing the Hub Transport server role with the following error:

[ERROR] The accepted domain already exists

The actual domain name in the error message will vary depending on your configuration.

This issue occurs if all of the following conditions are true:


To resolve this problem, do one of the following:

  • Upgrade to Microsoft Exchange 2007 Service Pack 1.

  • Do not use wildcards when configuring accepted domains. Explicitly specify each subdomain that you use in your e-mail address policies as an accepted domain. For step by step instructions about configuring accepted domains, see How to Create Accepted Domains.

For More Information

To learn more about managing accepted domains, see Managing Accepted Domains.

To learn more about managing e-mail address policies, see Managing E-Mail Address Policies.