Article ID: 302790 - View products that this article applies to.
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If messages are sent to X.400 one-off addresses that match the default recipient policy but are not in Active Directory, those messages may loop between routing groups when a Routing Group connector is created between the routing groups, even though the Share address space with other X.400 systems option is set.
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
301378The English version of this fix should have the following file attributes or later:
(http://support.microsoft.com/kb/301378/EN-US/ )XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
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NOTE: Because of file dependencies, this update requires Microsoft Exchange 2000 Server Service Pack 1.
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 2.
To activate this fix, you need to set the Share address space with other X.400 systems option. For additional information about how to set this option, click the article number below to view the article in the Microsoft Knowledge Base:
293458If you set the Share address space with other X.400 systems option in Exchange 2000, you must enable the option on the default policy for the option to take affect. You must also manually enable the Share address space with other X.400 systems option on all of the Exchange Server 5.5 sites in the organization.
(http://support.microsoft.com/kb/293458/EN-US/ )XCON: How to Add the "Share Address Space with Other X.400 Systems" Option in Exchange 2000
By design, this setting is an organization-wide setting, not an administrative group-level or site-level setting.
IMPORTANT: Be aware that this setting might cause unwanted routing of mail if you have any other X.400 routes outside your organization that match or partially match any existing address spaces in the organization.