Applies to: Exchange Server 2007 SP3, Exchange Server
2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2007-08-20
This topic explains how to use the Exchange Management Console or the Exchange Management Shell to configure the transport dumpster feature on a Hub Transport server. The transport dumpster is an optional feature for cluster continuous replication (CCR) and local continuous replication (LCR), and it is enabled by default. The configuration settings for the transport dumpster are applied at the storage group level.
The following functionality is available only on computers running Microsoft Exchange Server 2007 Service Pack 1 (SP1):
- Enabling the transport dumpster for LCR
- Using the Exchange Management Console to view and configure the
transport dumpster settings
For more information about new high availability functionality in Exchange 2007 SP1, see New High Availability Features in Exchange 2007 SP1.
In this procedure, you can change the default configuration settings for the transport dumpster. Here are recommendations for configuring two of the parameters:
- MaxDumpsterSizePerStorageGroup We
recommend that you configure the
MaxDumpsterSizePerStorageGroup parameter, which specifies
the maximum size of the transport dumpster queue for each storage
group, to a size that is 1.5 times the size of the maximum message
that can be sent in the organization. If the organization has no
size limits, we recommend you configure the
MaxDumpsterSizePerStorageGroup parameter to a size that is
1.5 times the size of the average message size sent in the
organization. For example, if the maximum size for messages is
10 megabytes (MB), you should configure the
MaxDumpsterSizePerStorageGroup parameter with a value of
- MaxDumpsterTime We also recommend
configuring the MaxDumpsterTime parameter, which specifies
how long an e-mail message should remain in the transport dumpster
queue, to a value of 07.00:00:00, which is 7 days. This amount of
time is sufficient to allow for an extended outage to occur without
loss of e-mail. When using the transport dumpster feature,
additional disk space is needed on the Hub Transport server to host
the transport dumpster queues. The amount of storage space required
is approximately equal to the value of
MaxDumpsterSizePerStorageGroup multiplied by the number of
If you do not configure the transport dumpster, the default values are used. The default value for the MaxDumpsterSizePerStorageGroup parameter is 18 MB and the default value for the MaxDumpsterTime parameter is 7 days. If either the size limit or time limit is reached, messages are removed from the transport dumpster queue by order of first in, first out.
|Setting either value to zero disables the transport dumpster for all CCR and LCR-enabled storage groups in the Exchange organization.|
Before You Begin
Verify the following before performing the procedure:
- Make sure that you have enough space on each Exchange Hub
Transport server to accommodate the data in the transport dumpster
queue for each storage group.
- Make sure that the account you use is delegated the Exchange
Organization Administrator role. For more information about
permissions, delegating roles, and the rights that are required to
administer Microsoft Exchange Server 2007, see Permission
To use the Exchange Management Console to view and configure the transport dumpster settings
Open the Exchange Management Console from a management workstation that has Exchange 2007 SP1 installed.
Expand Organization Configuration, and then select Hub Transport.
In the result pane, select the Global Settings tab.
Double-click Transport Settings.
In the Transport Dumpster area, type the appropriate values for the Maximum size per storage group (MB) and Maximum retention time (days) fields.
Click OK to save the changes.
To use the Exchange Management Shell to determine the current settings of the transport dumpster
Run the following command to view the current settings for the transport dumpster:
Note: You should see a listing of the transport dumpster settings for the entire Exchange organization.
To use the Exchange Management Shell to configure the transport dumpster
Run the following command:
Set-TransportConfig -MaxDumpsterSizePerStorageGroup <size> -MaxDumpsterTime <timespan>
For example, to configure the maximum size of the transport dumpster per storage group to 30 MB with a transport dumpster life of 7 days, run the following command:
Set-TransportConfig -MaxDumpsterSizePerStorageGroup 30MB -MaxDumpsterTime 07.00:00:00
For More Information
For detailed syntax and parameter information about the cmdlet, see Set-TransportConfig.
For more information about installing CCR, see Installing Cluster Continuous Replication on Windows Server 2003.