Applies to: Exchange Server 2007
Topic Last Modified: 2007-06-14

Use the General Page on the Accepted Domain properties dialog box to specify how Microsoft Exchange handles the e-mail messages that it accepts.

An accepted domain is any Simple Mail Transfer Protocol (SMTP) namespace for which an Exchange organization sends and receives e-mail. Accepted domains include those domains for which the Exchange organization is authoritative. An Exchange organization is authoritative when it handles mail delivery for recipients in the accepted domain.

Relay domains are accepted domains where the following conditions are true:

• Recipients' mailboxes are not in this Exchange organization.
  
  
• Mail has to be relayed to one of the following destinations:
  
  
  • To an external e-mail server.
    
    
  • To an Exchange organization for delivery to the recipient.
    
    

Authoritative Domain

To specify that recipients in this domain have mailboxes in this organization, select this option.

Internal Relay Domain

To specify that recipients in this domain do not have mailboxes in this Exchange organization but do have contacts in the address book and that mail will be relayed for this domain through Hub Transport servers in this Exchange organization, select this option.

External Relay Domain

To specify that recipients in this domain do not have mailboxes in this organization and that e-mail will be relayed for this domain through the Edge Transport servers, select this option.

For More Information

To ensure that you are reading the most up-to-date information and to find additional Exchange Server 2007 documentation, visit the Exchange Server TechCenter.

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