I have the omada controller running v4.3.5 on Ubuntu 18.

4 AP (EAP245 and EAP620).

I can not get the email notifications to work. I am trying to use google smtp. 

I keep getting this error: Failed to send the email to the specified recipient.

I have read multiple post with instructions. So far, I have turned on "less secure apps", enabled 2FA with app specific password for omada controller. I have tried multiple ports with and without ssl. 

Does anyone have any other suggestions? Thanks.