Microsoft KB Archive/325321

= Inbound Internet SMTP Mail Is Not Received =

PSS ID Number: 325321

Article Last Modified on 7/1/2003

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The information in this article applies to:


 * Microsoft Exchange Server 2003 Enterprise Edition
 * Microsoft Exchange 2000 Server

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This article was previously published under Q325321



SYMPTOMS
After you install Exchange, users may not receive SMTP mail, and Non-Delivery Reports (NDR) may not be generated.



CAUSE
This issue may occur when SMTP clients either cannot authenticate with the Exchange server, or when the SMTP Virtual Server settings prevent them from relying on messages that are sent through the server.



RESOLUTION
To resolve this issue:
 * 1) Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
 * 2) Expand the Servers container, expand your Exchange server, expand Protocols, and then expand SMTP.
 * 3) Right-click Default Virtual SMTP Server, and then click Properties.
 * 4) Click the Access tab, click Relay, and then click All except the list below.
 * 5) Make sure that the Allow all computers which successfully authenticate to relay, regardless of the list above check box is selected.
 * 6) Click OK, and then click Authentication.
 * 7) Click to select the Anonymous access check box.
 * 8) Click OK two times.
 * 9) Restart Default SMTP Virtual Server. To do so, right-click Default SMTP Virtual Server, click Stop, right-click the virtual server again, and then click Start.



MORE INFORMATION
To diagnose this issue, use Telnet to send a message to a mailbox that is located on your Exchange server. For additional information about how to use Telnet to send messages, click the article number below to view the article in the Microsoft Knowledge Base:

153119 XFOR: Telnet to Port 25 of IMC to Test IMC Communication

If client authentication fails, you receive the following error message:

454 5.7.3 Client was not authenticated

For additional information about how to prevent your Exchange server from being used to relay junk mail (spam), click the following article number to view the article in the Microsoft Knowledge Base:

319356 HOW TO: Prevent Unsolicited Commercial E-Mail in Exchange 2000 Server

Additional query words: XADM

Keywords: kbprb KB325321

Technology: kbExchange2000Search kbExchange2000Serv kbExchange2000ServSearch kbExchangeSearch kbExchangeServ2003Ent kbExchangeServ2003Search

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