Configuring Security

Control Connections to Virtual Servers

To enhance security, you can selectively include or exclude specific computers, subnets, and entire domains from accessing a virtual server. By default, all computers are allowed access to the server until you add them to a list of restricted computers. You can restrict access to a virtual server by either listing the computers that can access the server, or by specifying a group of computers that cannot.

The following procedure describes how to control connections to virtual servers except for the HTTP Exchange Virtual Server. You control connections to the HTTP Exchange Virtual Server through the Internet Information Services (IIS) snap-in.

To control connections to a virtual server (except the HTTP Exchange Virtual Server):

  1. Start System Manager
    On the Start menu, point to Programs, point to Microsoft Exchange, and then click System Manager.
  2. Navigate to the virtual server.


    1. Server
    2. Protocols
    3. Protocol type
    4. Virtual server
  3. Right-click the virtual server, and then click Properties.
  4. Select the Access tab, and then under Connection control, click Connection.
  5. In the Connection dialog box, select either Only the list below (which grants access only to the computers you add), or select All except the list below (which grants access to all computers except the ones you add), and then click Add.
  6. Select one of the following options:

Related Topics

Control Connections to the HTTP Exchange Virtual Server Secure Access by IP Address, Subnet, or Domain Set SMTP IP Address and Domain Name Restrictions Control Access to the HTTP Virtual Server Control Access to the IMAP4 Virtual Server Control Access to the POP3 Virtual Server