• Article

There are no active Hub Transport server in the local site

 

Topic Last Modified: 2006-12-18

The Microsoft Exchange Server 2007 Management Pack for Microsoft Operations Manager (MOM) monitors the Windows Application log on computers that are running Exchange Server 2007 and generates this alert when the event or events specified in the following Details table are logged.

To learn more about this event, do one or more of the following:

  • Review the description of the event that includes the variables specific to your environment. From the MOM Operator Console, select this alert, and then click the Properties tab.

  • Review all events that have been logged that meet the criteria of this MOM alert. From the MOM Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description.

Details

Product Name

Exchange

Product Version

8.0 (Exchange Server 2007)

Event ID

1009

Event Source

MSExchangeMailSubmission

Alert Type

Error

MOM Rule Path

Microsoft Exchange Server/Exchange 2007/Mailbox/Mail Submission

MOM Rule Name

There are no active Hub Transport server in the local site.

Explanation

This Warning event indicates that the computer that is running the Mailbox server role cannot submit messages to a computer that is running the Microsoft® Exchange Server 2007 Hub Transport server role. Additionally, there are Hub Transport servers in the same Active Directory® directory service site as the Mailbox server that can respond to the request. This event may occur if any of the following conditions is true:

  • The Microsoft Exchange Transport service is not running on a Hub Transport server.

  • The MAPI RPC connection is blocked between the Mailbox server and Hub Transport server.

  • The Hub Transport server has reached the maximum number of submission threads that the server can have open at the same time to send messages from mailboxes. This behavior may occur if the computer that is running the Mailbox server role has multi-processors and the computer that is running the Hub Transport server role is a single-processor. In this configuration, the Mailbox server may submit more e-mail traffic than the Hub Transport server can process.

In Exchange 2007, a new notification service called the Microsoft Exchange Mail Submission service runs on the mailbox server and notifies an available Hub Transport server in the same Active Directory site in which the service is running that messages are available for retrieval from a sender’s Outbox. The Microsoft Exchange Mail Submission service tries to distribute message submissions equally across all available Hub Transport servers that are available in the same Active Directory site in which the service is running.

The Microsoft Exchange Mail Submission service obtains a list of Hub Transport servers in the same Active Directory site as the mailbox from which a Store driver retrieves messages. A round-robin process determines which bridgehead server is notified. The store driver on the Hub Transport server that is notified retrieves the message and adds the message to the transport pipeline by putting it in the Submission queue on the Hub Transport server that was notified. If no bridgehead servers are available, messages cannot be added to the transport pipeline.

For more information, see Transport Architecture.

User Action

To resolve this warning, follow one or more of these steps:

  • Make sure that the Microsoft Exchange Transport Service is enabled and running on the Hub Transport server.

  • Make sure that no firewalls filter network data or block MAPI remote procedure call (RPC) traffic between the Mailbox server and Hub Transport server.

  • Make sure that the Mailbox server and the Hub Transport server are not deployed in a perimeter network.

  • If this frequently occurs, consider whether you should add more processors on the Hub Transport server. You can also increase the value of MaxConcurrentMailboxSubmissions by using the Set-TransportServer cmdlet. For more information, see Set-TransportServer.

For More Information

To search the Microsoft Knowledge Base articles based on criteria that generated this alert, visit the Search the Support Knowledge Base (KB) Web site.

To review Exchange 2007 event message articles that may not be represented by Exchange 2007 MOM alerts, see the Events and Errors Message Center.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.