A. To add additional email addresses to an Exchange organization, you need to change the recipient policy for the organization:

  1. Start Exchange System Manager (ESM--Start, Programs, Microsoft Exchange, System Manager).
  2. Expand Recipients and select Recipient Policies.
  3. Right-click Default Policy and select Properties.
  4. Select the "E-mail Addresses (Policy)" tab.
  5. Click New.
  6. From the address type list, select SMTP Address and click OK.
  7. Enter the new address in the format @<domain> (e.g., @widget.test). By default, "This Exchange Organization is responsible for all mail delivery to this address." is selected, which will make Exchange authoritative for that domain. If a mail is received for the new domain and no account is found, Exchange will send a Non Delivery Report (NDR) to the message originator; if you clear this box means, when a matching recipient can't be found, Exchange can forward the message to another system. Click OK
  8. If this new address should be the primary address, select the new address and click "Set as Primary" (note that Exchange must be authoritative for the primary address).