I am using "Email Extension Plugin" 2.40.5 and after configuring all the needful values when i am trying to test configuration below error message is showing up:

com.sun.mail.smtp.SMTPSendFailedException: 530 5.7.57 SMTP; Client was not authenticated to send anonymous mail during MAIL FROM

I have another Jenkins setup where 2.39 installed which is working fine with the same configurations. The only difference i can see between these is, under "Extended E-mail Notification" there is a check box for "Override Global Settings" and upon checking on the same it will show "System Admin E-mail Address" option where i can set the admin email value. It the 2.39 version i set the value and tested and found working, the same option is not available in 2.40.5 where its throwing the above error message.

Am i missing anything here.