How to send mail from jira server?

[Sri Ranjan]

I enabled the SMTP mail server option.But while sending a Test mail the following error logs occured.

An error has occurred with sending the test email:
com.atlassian.mail.MailException: javax.mail.AuthenticationFailedException: No authentication mechansims supported by both server and client

[Christian Czaia [Decadis AG]]

Looks like sth. is wrong in your mail server configuration... Are you sure you entered a valid user and password for the mail server?

[Rambanam Prasad]

check this trouble shooting KB

https://confluence.atlassian.com/display/JIRAKB/Sending+a+Test+Email+Fails+due+to+javax.mail.AuthenticationFailedException

and also check this issue

https://jira.atlassian.com/browse/JRA-27623

[Daniel Garcia]

Check your credentials and try again. You might have introduced your username and password incorrectly...