The message could not be sent to the SMTP server. The transport error code was 0x800ccc6c. The server response was 452 4.3.1 Insufficient system resources | Community

We are getting the below error alot these days , seems its causing the memory utilization by k2server servie to reach saturation lever and shutdown couple of time / day , any ideas how to resolve the issue or at least to avoid memory leak/shutdown !

System.Runtime.InteropServices.COMException (0x80040211): The message could not be sent to the SMTP server. The transport error code was 0x800ccc6c. The server response was 452 4.3.1 Insufficient system resources

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Have you done any preliminary checking to see if the server environment is healthy? i.e. checking the error and event logs for clues. Have you also tried tracing down the cause of any leaks? i.e. is it due to some code in the application.

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