When you try to add a new Simple Mail Transfer Protocol (SMTP) address to the Microsoft Exchange 2000 Server default recipient policy, you receive an error message that is similar to the following:The following event is logged in the application event log in the Event Viewer:

Event ID: 1
Source: InternetProxy
Description: Unable to generate an e-mail address because the site address SMTP:domain.com is bad.
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Note In this scenario, domain.com is the e-mail address that is being used.

This behavior occurs if the @ symbol does not come before the e-mail address.

To resolve this behavior, follow these steps:

1. Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
2. In the left pane, expand Recipients, and then click Recipient Policies.
3. In the right pane, right-click Default Policy, and then click Properties.
4. Click the E-Mail Addresses (Policy) tab, and then click New.
5. In the E-mail address type list, select SMTP Address, and then click OK.
6. In the Address box, type @ followed by the e-mail address.
   
   For example, @domain.com is a valid e-mail address whereas domain.com is not a valid e-mail address.
7. Click Apply, and then click OK two times.
8. Right-click Default Policy, and then click Apply this policy now.
9. In the Exchange System Manager dialog box, click Yes.