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Hub Transport

Hub Transport Server Role :-

This part includes all the information on Hub Transport Server Role introduced in Exchange Server 2007.

please, Leave your comments on this….

1. What is Hub Transport Server Role?

Hub Transport server role handles all mail flow inside the organization, applies transport rules, applies journaling policies, and delivers messages to a recipient’s mailbox. Messages that are sent to the Internet are relayed by the Hub Transport server to the Edge Transport server role that is deployed in the perimeter network. Messages that are received from the Internet are processed by the Edge Transport server before they are relayed to the Hub Transport server. If you do not have an Edge Transport server, you can configure the Hub Transport server to relay Internet messages directly

2. Where Hub Transport Roles must be deployed?

The Hub Transport server role stores all its configuration information in Active Directory. This information includes transport rules settings, journal rule settings, and connector configurations. Because this information is stored in Active Directory, you can configure settings one time, and then those settings are applied by every Hub Transport server in the organization.

3. What is categorizer?

The categorizer is a component of Exchange transport that processes all inbound messages and determines what to do with the messages based on information about the intended recipients.

4. What are the processes involved in categorizer?

The Hub Transport server uses the categorizer to expand distribution lists and to identify alternative recipients and forwarding addresses. After the categorizer retrieves full information about the recipients, it uses that information to apply policies, route the message, and perform content conversion

5. What to do to use the Anti-Spam features on Hub Transport Server Role?

Although these Built-in Protection features are designed for use in the perimeter network on the Edge Transport server role, the Edge Transport agents can also be configured on the Hub Transport server. By default, these agents are not enabled on the Hub Transport server role. To use the anti-spam features on the Hub Transport server, you must register the agents in a configuration file and enable the features that you want to use by running a provided Exchange Management Shell script

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 %program files%\Microsoft\Exchange Server\Scripts folder.

6. What is journaling Agent?

The Journaling agent is a compliance-focused agent that you can configure to journal e-mail messages that are sent or received by departments or individuals in your Exchange 2007 organization, to and from recipients outside your organization, or both, for use in the organization’s e-mail retention or archival strategy

7. What are the types of Journaling Agent?

Exchange 2007 provides the following two journaling options to meet your organization’s requirements:

Standard journaling   Standard journaling enables the Journaling agent in Exchange 2007 to journal all messages that are sent to and from recipients and senders that are located on a specific mailbox database on a computer running the Mailbox server role. You must configure journaling individually on each mailbox database in your organization if you want to journal all messages to and from all recipients and senders

Premium journaling   Premium journaling enables the Journaling agent in Exchange 2007 to use rules that you configure to match the specific needs of your organization. You can create journal rules for a single mailbox recipient or for entire groups within your organization. To use premium journaling, you must have the Exchange Enterprise Client Access License (CAL)

8. What are the features in premium journaling that won’t work with standard Journaling Agent?

  • Per-recipient or distribution list journaling:  With standard journaling, you can only enable journaling on a per-mailbox database basis. All recipients and senders on a journaling-enabled mailbox database will be journaled.
  • Journal rule scope:  All messages to and from recipients and senders on a journaling-enabled mailbox database are journaled.
  • Journal rule replication:   Because standard journaling is applied on a per-mailbox database basis, this configuration cannot be replicated throughout the organization.

9. What are the Transport rules?

Transport rules in Microsoft Exchange Server 2007 let you apply messaging policies to e-mail messages that flow through an Exchange Server 2007 organization. In Exchange 2007, the following two transport rules agents can act on messages

  1. 1. Transport Rules Agent
  2. 2. Edge transport Rules Agent

10. What is Transport Rules Agent?

The Transport Rules agent runs on all computers that have the Hub Transport server role installed. This agent helps you apply compliance- and policy-based rules to all messages that flow through an Exchange 2007 organization.

11. What is Edge rules Agent?

Edge Rules agent   The Edge Rules agent runs on all computers that have the Edge Transport server role installed. This agent helps you manage antivirus problems.

12. What is Store Driver?

Messages that are sent by users in your organization are picked up from the sender’s Outbox by the store driver and are put in the Submission queue on a server that runs the Hub Transport server role

13. Explain Internal Message flow in Exchange Server 2007?

When messages are submitted to the Hub Transport server, they are processed by the categorizer. The categorizer is a component of Exchange transport that processes all inbound messages and determines what to do with the messages based on information about the intended recipients. In Exchange 2007, the Hub Transport server uses the categorizer to expand distribution lists and to identify alternative recipients and forwarding addresses. After the categorizer retrieves full information about the recipients, it uses that information to apply policies, route the message, and perform content conversion. Messages are then delivered locally by the store driver to a recipient’s mailbox, or they are delivered remotely by using SMTP to send messages to another transport server. Messages that are sent by users in your organization are picked up from the sender’s Outbox by the store driver and are put in the Submission queue on a server that runs the Hub Transport server role

14. What is the function of pickup and replay directory?

By default, the Pickup Directory and the Replay directory exists on every Microsoft Exchange Server 2007 computer that has the Hub Transport server role or the Edge Transport server role installed.

Pickup Directory: A Directory that receives RFC-822 compliant files from the file system for the purpose of creating message objects that can be passed to the Submission queue.

Replay Directory: The Replay directory receives messages from foreign gateway servers and resubmits messages that administrators export from the queues of Exchange 2007 servers.

15. What is mail submission queue?

A persistent queue that is used by the categorizer in Exchange Server 2007 to gather all messages that have to be resolved, routed, and processed by transport agents. After categorization, the message is moved to a delivery queue or to the Unreachable queue. Users cannot take actions on the Submission queue.

16. What is the function of Mail Delivery Queue?

A group of temporary queues that hold messages that are being delivered to a Mailbox server by using encrypted Exchange RPC. Mailbox delivery queues exist on Hub Transport servers only. A different mailbox delivery queue exists for each Mailbox server destination. The destination Mailbox server must exist in the same Active Directory directory service site as the Hub Transport server. Mailbox delivery queues are dynamically created as needed and are automatically removed.

17. What is the function of SMTP Receive connector?

A connector that is used to receive mail from remote mail systems based on administrator-defined address spaces. Receive connectors apply a customized set of limits and other configuration options that apply only to messages received from remote mail systems that match the address space that is configured on the send connector

18. What is the function of SMTP send connector?

A connector used to send mail to remote mail systems based on administrator-defined address spaces. Send connectors apply a customized set of limits and other configuration options that apply only to messages destined for remote mail systems that match the address space configured on the Send connector.

19. What are Journaling and Archiving?

Journaling is the ability to record all communications, including e-mail communications, in an organization for use in the organization’s E-mail retention or archival strategy

Archiving refers to reducing the strain of storing data by backing up the data, removing it from its native environment, and storing it elsewhere

20. What is disclaimer?

Microsoft Exchange Server 2007 includes the ability to add text disclaimers to e-mail messages that are processed on a computer that has the Hub Transport server role installed. Disclaimers are typically used to provide legal information, warnings about unknown or unverified e-mail senders, or for various other reasons as determined by an organization

21. What is Message classification?

Message classifications are a Microsoft Exchange Server 2007 and Microsoft Office Outlook 2007 feature that is intended to help organizations comply with their e-mail policies and regulatory responsibilities. When a message is “classified,” the message contains specific metadata that describes the intended use or audience of the message. Outlook 2007 or OWA may act on this metadata by displaying a user-friendly description of the classification to senders and receivers of a classified message. In Exchange 2007, the Microsoft Exchange Transport service may act on the metadata if there is a transport rule that meets specific criteria that are configured by the Exchange administrator.

22. What is policy in Hub Transport Server Role?

Organizations need an application-specific approach to coping with a growing number of legal, regulatory, and internal policy and compliance requirements. Administrators must filter, process, and store e-mail that flows between users in the organization, to or from the Internet, or between partner organizations. Microsoft Exchange Server 2007 provides a broad set of e-mail policy and compliance features to address this increasing requirement to protect and control the flow of information

23. Is it possible to install Forefront security in Exchange environment having only Hub Transport server for mail flow?

Yes, we can install Forefront security in Exchange environment having only Hub Transport server for mail flow

24. What is the post installation tasks involved on Hub Transport Server?

After 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.

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.

25. What is Message Records Management feature in Exchange Server 2007?

Administrators can use the MRM features in Exchange 2007 to help users and the organization retain the messages that they need for business or legal reasons and delete message that they don’t need. You do this by configuring managed folders, which are Inbox folders to which retention policies are applied.

Messaging records management (MRM) in Microsoft Exchange Server 2007 helps you:

  • Reduce the risks that are associated with e-mail and other communications by making it easier to keep what is needed to comply with company policy, government regulations, or legal needs.
  • Remove content that has no legal or business value

26. Name the E-Mail Policy and Compliance features included in Exchange Server 2007?

  1. Address Rewriting
  2. Disclaimer
  3. Journaling
  4. Transport Rules
  5. Message Records Management

27. What is Address Rewriting?

Address Rewriting Agent runs in Edge Transport Server. The main purpose of Edge Transport Server is to rewrite the Address to some other address. This plays an important role, consider if there are 5 Sub domain inside a forest and the entire sub domain want send mail outside with a unique address space

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One Response to “Hub Transport”

  1. Hemant said

    I believe you are thesame Viral working with Zenith Infotech Ltd before 3-4 years.
    Nice to see your blog buddy. Keep going.

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