Microsoft KB Archive/289553

= Non-Delivery Report 550 5.7.1: Unable to Relay =

PSS ID Number: 289553

Article Last Modified on 10/9/2003

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The information in this article applies to:


 * Microsoft Exchange 2000 Server
 * Microsoft Exchange Server 2003 Enterprise Edition
 * Microsoft Exchange Server 2003 Standard Edition
 * Microsoft Windows Small Business Server 2003, Premium Edition
 * Microsoft Windows Small Business Server 2003, Standard Edition

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This article was previously published under Q289553



SYMPTOMS
When you attempt to send mail to an Exchange 2000 Server recipient or Exchange Server 2003 recipient, the message may not be delivered. The sender may receive a non-delivery report (NDR) from the system administrator similar to the following:

The following recipient(s) could not be reached:

User1@domain.com on 11/01/00 8:14 AM

The originator does not have permission to submit message

dns;Sendingdomain.com failed 5.7.1 smtp;550

5.7.1 Unable to relay for User1@domain.com



CAUSE
While there are several causes for this error, the most common one is that there may be no recipient policy for the expected domain in the Exchange 2000 organization or the Exchange 2003 organization.



RESOLUTION
Add a recipient policy for the expected domain. To do so:  In Exchange System Manager, expand the Recipients object, then expand the Recipient Policies object. In the right-hand pane, right-click the Default Policy, and then click Properties. Click the E-Mail Addresses tab. Click Add to add a new SMTP address. In the SMTP Address Properties dialog box, in the Address field, enter

@ .com

where @ .com is the domain that then sender is attempting to send to. Click Apply, and then click OK. In the Default Policy Properties dialog box, click the E-Mail Address tab, and then click to select the check box next to the SMTP address that you just created. Click Apply. Click OK when you receive the following notification:

The e-mail Addresses of type(s) [smtp] have been modified. Do you want to update all corresponding recipient e-mail addresses to match these new address(es)?

NOTES: If you would like to make the new SMTP address the default reply-to address for all users in your Exchange 2000 organization, click the new address, click Set as Primary, click Apply, and then click OK.

If you want to update these addresses immediately, force the Recipient Update Service to update your Exchange server and organization. To do so, follow the instructions in the Microsoft Knowledge Base articles in the &quot;More Information&quot; section.</li></ol>

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MORE INFORMATION
Although the Domain Name System (DNS) records exist that point the domain to the computer that is running Exchange 2000 or Exchange 2003, the matching recipient policy may not have been created. A recipient policy for each domain directed to an Exchange 2000 server or an Exchange 2003 server should be entered. Recipient policies control the behavior of SMTP in addition to the proxy addresses that get stamped on users.For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base:

275294 XADM: Recipient Update Service Is Not Created Automatically

260973 XCON: SMTP Domains for Inbound and Relay in Exchange 2000 Server

Note that you should be aware of a potential issue if you put the fully qualified domain name (FQDN) of an Exchange 2000 server or an Exchange 2003 server in a Recipient policy. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

288175 XCON: Recipient Policy Cannot Match the FQDN of Any Server in the Organization

Additional query words: reviewdocid MX Mail eXchanger A Address XIMS

Keywords: kbprb KB289553

Technology: kbExchange2000Search kbExchange2000Serv kbExchange2000ServSearch kbExchangeSearch kbExchangeServ2003Ent kbExchangeServ2003Search kbExchangeServ2003St kbSBServ2003Pre kbSBServ2003Search kbSBServ2003St kbSBServSearch

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