|Message:||SMTP completed authentication but could not determine the account name or security identifier (SID) for the following reason: %1.|
This Error event indicates that inbound authentication on a Receive connector was completed, but the account name or security identifier (SID) could not be determined. The reason for the problem is specified in the error message text.
The security settings for a Receive connector specify the permissions that are granted to sessions that connect to the Receive connector and the supported authentication mechanisms.
Receive connectors use permission groups to define the entities that can submit messages to the Receive connector and the permissions that are assigned to those groups. A permission group is a predefined set of permissions that is granted to well-known security principals and assigned to a Receive connector. Security principals include users, computers, and security groups.
The set of permission groups is predefined in Microsoft Exchange Server 2007. This means that you cannot create additional permission groups. Also, you cannot modify the permission group members or the associated permissions. For a complete description of the permission groups, and the associated security principals, see Receive Connectors.
The following authentication methods are available for inbound connectors on a Receive connector:
In the Exchange Management Console, you set the accepted authentication methods for inbound connections on the Authentication tab of the Receive connector properties page.
In the Exchange Management Shell, you set the accepted authentication methods for inbound connections by using the following parameters on the Set-ReceiveConnector cmdlet:
To resolve this error, do one or more of the following:
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.