Trouble getting email to be sent via GMail

[Steve Reilly]

Some time back, maybe October, I quit getting email notifications from Scheduler which really helped with both tracking weather events and image progression. I have tried my main email address with CenturyLink, my DSL provider, as well as 2 other Gmail accounts I've had. I even setup a separate Gmail account, sreillyACP@gmail.com and none will successfully send emails via Scheduler. There's a common issue I can't seem to find. A friend has made suggestions which I have tried such as port #s and Gmail settings but none have changed the outcome. Below is a screen shot taken after using the Test Email function in Scheduler. It indicates and email was sent but then 5-10 seconds later I get this notification: