Jenkins: Not able to send email

I am using Jenkins 2.89.3 and setup Jenkins Editable Email Notification with triggers as Always.

Build run successfully but getting error in email sending. Console output is as:

Email was triggered for: AlwaysSending email for trigger: AlwaysSending email to: himanshu.jn48@gmail.comConnection error sending email, retrying once more in 10 seconds...Connection error sending email, retrying once more in 10 seconds...Failed after second try sending emailFinished: SUCCESS

I have received the email when I test the configuration by sending test e-mail.

I am attaching screenshot of SMTP Configuration.link for image