Jenkins fails to send email - Authentication Required

Question

I have a Jenkins server running on a Linux VM. I would like my Jenkins to send me an email every time a build gets started. I have set the email service up as below. As I am using 2 factor authentication for my google account, I have created an app password for Jenkins, but it still says "authentication required". I have also installed the Extended E-mail notification plugin and set it up the exact same way with the same result. Does anyone know what could be the issue here?

Answer 1

I did a test set up and tried using exactly your configuration. I too faced the same issue. Since i had tested this thing long time ago and it worked well then, i knew it had to do with some change in latest plugin version. So i tried downgrading the Mailer plugin from version 1.24 to 1.23 and it worked. :)

You can get the Mailer plugin version 1.23 here.

Details about downgrading a given plugin's version is described here

Note: You don't have to configure Extended E-mail Notification section for this to work. Just leave it as is.