Serial Port Overrun Error Labview
LabVIEW: The system caused the network connection to be aborted. This is interface is not being taxed terribly heavily, maybe 1Kb/s on total of 3 sockets for one Ethernet connection, and 3 other ethernet connections with only 1 active socket (pretty slow on these ones.). Serial Port Interfacing with LabVIEW. (DTE) using a straight through serial cable. Typically, PC's are defined as a DTE and peripherals are defined as DCE. To interface a DCE with another DCE, or a DTE with another DTE, a null modem. AN INTRODUCTION TO SERIAL PORT INTERFACING. 

The error message actually lists two possible causes of the error. The first is 'serial port overrun error'. Scott avett. The second is ' The system caused the network connection to be aborted.' Since you're not using the serial port, it's pretty safe to assume that the second possiblity is the cause of the error. You might want to check that the name of the server is the actual smtp server and not the Outlook server. You might want to check the size of the file and see if there is any limitation set up by your IS department.