MSExchangeTransport 1009

 

This article provides an explanation and possible resolutions for a specific Exchange event. If you don't find what you’re looking for here, try searching Exchange 2010 Help.

Details

Product Name

Exchange

Product Version

14.0

Event ID

1009

Event Source

MSExchangeTransport

Category

SmtpReceive

Symbolic Name

SmtpReceiveMaxConnectionReached

Message Text

Receive connector %1 rejected an incoming connection. The maximum number of connections (%2) for this connector has been reached.

Explanation

This Warning event indicates that a Receive connector has reached the maximum permitted number of simultaneous incoming connections. This value is specified by the MaxInboundConnection parameter on the Receive connector. The default value is 5000.

User Action

To resolve this error, increase the value of the MaxInboundConnection parameter on the Receive connector by using the Set-ReceiveConnector cmdlet in the Exchange Management Shell. The valid input range for this parameter is 1 to 2147483647. To disable the inbound connection limit on a Receive connector, enter a value of unlimited.

For more information, see Set-ReceiveConnector.

For More Information

If you are not already doing so, consider running the Exchange tools, which have been created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues and improve mail flow. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.