Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007
Topic Last Modified: 2007-03-15

After you install the Microsoft Exchange Server 2007 Hub Transport server role, you must enable and configure the agents that provide the messaging features that you want to deploy. An agent is a managed software component that performs a task in response to an Exchange 2007 event. Transport agents in Exchange 2007 perform tasks that support messaging policy and compliance and the Built-in Protection features that support anti-spam and antivirus prevention and management.

This topic provides information about the default agent configuration for a computer that has the Hub Transport server role installed.

Agent Configuration

By default, all the transport agents listed in Table 1 are installed on the Hub Transport server role. An agent must be installed and enabled for you to use the associated transport feature. Only the agents that provide the messaging features that are designed to be deployed inside the organization are installed by default. Agents that are not installed are designed for use in the boundary network on a computer that has the Edge Transport server role installed. To view the agent configuration, run the Get-TransportAgent command in the Exchange Management Shell.

You can install the anti-spam agents on the Hub Transport server role by using the provided Install-AntiSpamAgents.ps1 script. The script is located in the %programfiles%\Microsoft\Exchange Server\Scripts folder. After you run this script, all of the anti-spam agents are installed and enabled, and the Anti-spam tab is available in the Exchange Management Console.

Table 1 shows the default configuration for agents on the Hub Transport server role.

Table 1   Default configuration for agents on the Hub Transport server role

Agent Default state Transport feature group

Journaling agent

Installed, Enabled

Messaging policy and compliance

Transport Rule agent

Installed, Enabled

Messaging policy and compliance

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