Not sure what instructions your followed since you didn't provide a reference.
I believe Gmail is no longer supporting connection from :"Less Secure Apps"...
Outgoing server is smtp.gmail.com
User is full gmail address
Ports: 587 or 465
For the password, I would enable 2 factor for the account. You should be using this for enhanced security anyway. Create an app password and use it in the password field.
Bay Area - CA
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I'm using an Imagerunner Advance C5535i (if it matters) and I'm having the same issue since the change. I generated and input an app password. When I test the SMTP connection, it says Connection to the Server successful. However, when I try to send an email, I get error code #839/ SMTP Authentication Error. Any ideas on why it isn't sending the scans when the test is working?
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