SMTP rejected a mail because the Active Directory lookup for the sender address returned validation errors

 

Topic Last Modified: 2007-11-16

The Microsoft Exchange Server 2007 Management Pack for Operations Manager monitors the Windows Application log on computers that are running Exchange Server 2007 and generates this alert when the event or events specified in the following Details table are logged.

To learn more about this alert, if you are using Microsoft Operations Manager 2005, do one or more of the following:

  • From the Operator Console, select this alert, and then click the Properties tab. Review the description of the alert that includes the variables specific to your environment.

  • From the Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description. Review the events that have been logged that meet the criteria of this Operations Manager alert.

To learn more about this alert, if you are using System Center Operations Manager 2007, do one or more of the following:

  • From the Operations Console, double-click this alert, and then click the General tab. Review the description of the alert that includes the variables specific to your environment.

  • From the Operations Console, double-click this alert, and then click the Alert Context tab. Review the events that have been logged that meet the criteria of this Operations Manager alert.

Details

Product Name

Exchange

Product Version

8.0 (Exchange Server 2007)

Event ID

1025

Event Source

MSExchangeTransport

Alert Type

Critical Error

MOM Rule Path

Microsoft Exchange Server/Exchange 2007/Common Components/Hub Transport and Edge Transport/Transport

MOM Rule Name

SMTP rejected a mail because the Active Directory lookup for the sender address returned validation errors.

Explanation

This Error event indicates a problem validating the e-mail address of a sender that was using "Send as" permission to send a message. The Active Directory directory service lookup for the sender's address returned the specified validation errors.

The "Send as" permission allows recipients to send e-mail messages as if the message originated from a different recipient. Specifically, recipients who are granted the "Send as" permission to any mail-enabled object can enter the other recipient's name in the From field for the messages that they send.

For example, assume that Michelle has been granted "Send as" permissions for the mailbox of her manager, Laura. Michelle sends a message to Julia with Laura's name in the From field. When Julia receives the message, it appears as if it was sent by Laura.

For more information, see: How to Grant Send As Permissions for a Mailbox.

User Action

To resolve this error, do one or more of the following:

  • Make sure that the Exchange server that logged this event can communicate with one or more Active Directory servers available in the organization.

  • Verified that the specified recipient has the "Send as" permission granted to the specified mail-enabled object.

For More Information

To search the Microsoft Knowledge Base articles based on criteria that generated this alert, visit the Search the Support Knowledge Base (KB) Web site.

To review Exchange 2007 event message articles that may not be represented by Exchange 2007 alerts, see the Events and Errors Message Center.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.