70-284 Notes 1

• SMTP ETRN Command
  

The ETRN command will cause the SMTP server to initiate the delivery of the messages that are queued on the server and are destined to your organization. The SMTP ETRN command was designed for sites that have intermittent Internet connectivity.

• FREE/BUSY Information
  

All Free/busy information is maintained in a system public folder called 'Schedule+ Free Busy'. To ensure all users are provided with the most up-to-date free/busy information, you should configure replication of these public folders.

• FRONT END/BACK END
  

In a front end/back end configuration, users connect to the front-end server, which queries the global catalog to determine each user's home server. The front-end server then forwards the users request to that server and returns the back-end servers response to the user. To protect the privacy of the communications across the internet, front-end servers support SSL encryption. A front-end server decrypts user's encrypted requests and forwards them to the appropriate back end servers by using the standard, unencrypted version of the protocol that is used in each original request.

• IP ADDRESS ALLOCATION – SERVER CLUSTER
  

Each NIC on each node must be assigned a unique IP address. Each EVS, which is implemented as a cluster resource group, must include a unique IP address resource. Additionally it is recommended that the quorum disk resource and the Microsoft Distributed Transaction coordinator resource each be implemented in a separate resource group. Each of these resource groups should have a unique IP address. There in a four node cluster (with each server having two NIC cards) there should be:

2 * 4 = 8 (for each NIC)

1 * 3 (for each EVS)

1 (for the quorum disk resource)

1 (for the MDTC)

• S/MIME CONTROL
  

To digitally sign or encrypt e-mail messages, users must be provided with appropriate digital certificates. If a public key infrastructure exists on your network and is appropriately configured, then users can request and obtain their certificates from a certification authority (CA) on the network either automatically or through certificate enrolment web pages.

Local users on the corporate network can use Microsoft Outlook to digitally sign or encrypt their messages. Remote users that can only use OWA, to use digital signatures and encryption, they must download and install S/MIME Control. Once the control has been downloaded and configured, the users who have digital signatures can start signing or encrypting their messages.

• Expansion server
  

When a user sends a message to a group, the exchange computer that acts as the expansion server expands the group to its individual members. This expansion permits members to receive the message. The expansion server also resolves all the names of all recipients in the group, and then determines the most efficient message routing.

• Last Restore Set
  

To perform a restore properly, specify a path to a temporary directory into which transaction logs should be restored. After all appropriate backups have been restored, the database by default, remains in an inconsistent state.

To bring the database into a consistent state, a hard recovery must be performed, which involves replaying the available transaction logs. To initiate the hard recovery process, you should specify the 'Last Restore Set' option in Backup when you were restoring the last backup.