Tuesday, 21 April 2015

Error: Receive connector Default Frontend rejected an incoming connection from IP address...

Error Message: Receive connector Default Frontend rejected an incoming connection from IP address 192.168.0.254. The maximum number of connections per source (20) for this connector has been reached by this source IP address.

This error occurs due to too many clients accessing the recieve connector simultaneously. In my experience this is somtimes caused by a load balancer performing SNAT (all of the source IP's are that of the the load balancer and NOT the original client IP address) - although in some busy environments you might also want to increase the RecieveConnector

Set-ReceiveConnector -Identity "Internet Receive Connector" -MaxInboundConnectionPerSource 500

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