Hi Carl,
This works for me. Here is my mailsent.log
"Severity","ThreadID","Date","Time","Application","Message"
"Information","scheduler-1","03/05/14","15:16:55",,"C:\ColdFusion11\cf usion\logs\mailsent.log initialized"
"Information","scheduler-1","03/05/14","15:16:55",,"Mail: 'Test Email' From:'cfinstal@adobe.com' To:'cfinstal@adobe.com' was successfully sent using mymailservername"
It verifies the connection for me, successfully as well. Can you try an alternative machine?
Regards,
Anit Kumar