Supporting Messaging Clients

Set the SMTP Postmaster Account

When a message cannot be delivered to someone in your organization, that person will receive a non-delivery report (NDR). All NDRs in your organization will be sent with the SMTP postmaster's address in the From line. Therefore, whenever someone replies to an NDR, either to report the delivery failure or to seek help in diagnosing the situation, this is the account that will be contacted.

For this reason, you should use an alias that will proxy replies to someone, or a valid SMTP e-mail address, such as user@<domain>.com, where <domain> is your organization's default domain. Internet users who get an NDR will then be able to reply to it and contact someone who can help them. At the very least, your organization will be made aware of the delivery problem.

To set the SMTP postmaster account:

  1. Start Active Directory Users and Computers
    On the Start menu, point to Programs, point to Administrative Tools, and then click Active Directory Users and Computers.
  2. Expand the domain in which the account resides, and then click Users.
  3. In the details pane, right-click the account that will receive postmaster mail for your domain, and then click Properties.
  4. In the Properties dialog, click the E-mail Addresses tab, and then click New.
  5. In New E-mail Address, click SMTP Address, and then click OK.
  6. In Internet Address Properties, type postmaster@<domain>.com, where <domain> is your organization's default domain name.