Administration Tip: Selectively
Allowing Access to Internet
Messages

Posted: May 15, 2002

Within a single Exchange 2000 organization, you can allow some users to have access to
Internet e-mail messages while restricting other users from such access. Although this
was possible with Exchange Server 5.5, you must use a different approach to achieve the
same result with Exchange 2000.

To restrict users from receiving Internet e-mail in Exchange 2000, you must create two
Simple Mail Transfer Protocol (SMTP) addresses, for example, someone@microsoft.com
and someone@microsoft.local. Using Exchange 2000 recipient policies, assign the
microsoft.local address to all users and the microsoft.com address to only the users who
are allowed to receive Internet messages. With this configuration, all users can receive
internal e-mail messages, but only specific users can receive Internet e-mail messages
because the microsoft.local address is not a valid Internet e-mail address.

To modify recipient policies:

From the Start menu, click Programs, click Exchange, and then click System
Manager.

1. In the console tree, expand Recipients, click Recipient Policies, right-click the
policy you want to modify, and then click Properties.
2. Click the E-Mail Addresses tab.
3. Click New, select the address type that you want, and then click OK.
4. In the Address box, type the appropriate information for the address type you
selected, and then click OK.
5. On the E-Mail Addresses tab, click to select the check box next to the e-mail
address you added.
6. If the e-mail address you added is the same type of address as an existing e-mail
address and you want the new address to be the primary address, select the new
address, and then click Set as Primary.
Note: The primary address is the address that appears in the From field when a
mailbox-enabled user sends a message.
7. Click OK. If you are prompted to update all the corresponding recipient e-mail
addresses to match the changes that you made, click Yes to apply the changes you
made to the recipient policy to the recipients associated with the policy. If you set the
new e-mail address as the primary address, the other e-mail addresses of that type
automatically become secondary addresses.

This tip is provided by the Microsoft Exchange User Education team.
For additional information, see the Microsoft TechNet Exchange site.