I believe I've solved this issue by carrying out the following action:-

First cancel all “send and receive” operations in OutLook. Next remove all emails from your "Outbox" (by either deleting them or moving them to the “Draft” folder). Next shutdown OutLook and then click on the “Start” button on the lower left-hand side of the Window’s taskbar, then click on “Run” now type in “regsvr32.exe inetcomm.dll” without the quotation marks, so it looks like this:

regsvr32.exe inetcomm.dll

Note the space between .exe and inetcomm.dll and hit “Enter” on the keyboard.

The computer will execute the command. If all goes well in a few moments a dialog box will appear and state “dll registered successful

I have not had it hand since ... cross fingers  ;)

Spoke to soon as a couple of weeks later the problem returned so I'm still searching for that elusive solution to this problem.