Job exception: 535 Authentication failed

Hello,

I have problems sending emails,

I can’t send emails to noreply@example.com

here is the error message:

Message (17 copies reported)

**Job exception: 535 Authentication failed**

**Backtrace**

**/usr/local/lib/ruby/2.7.0/net/smtp.rb:975:in `check_auth_response'**
**/usr/local/lib/ruby/2.7.0/net/smtp.rb:736:in `auth_plain'**
**/usr/local/lib/ruby/2.7.0/net/smtp.rb:728:in `authenticate'**
**/usr/local/lib/ruby/2.7.0/net/smtp.rb:565:in `do_start'**
**/usr/local/lib/ruby/2.7.0/net/smtp.rb:518:in `start'**
**/var/www/discourse/vendor/bundle/ruby/2.7.0/gems/mail-2.7.1/lib/mail/network/delivery_methods/smtp.rb:109:in `start_smtp_session'**
**/var/www/discourse/vendor/bundle/ruby/2.7.0/gems/mail-2.7.1/lib/mail/network/delivery_methods/smtp.rb:100:in `deliver!'**
**/var/www/discourse/vendor/bundle/ruby/2.7.0/gems/mail-2.7.1/lib/mail/message.rb:2159:in `do_delivery'**
**/var/www/discourse/vendor/bundle/ruby/2.7.0/gems/mail-2.7.1/lib/mail/message.rb:260:in `block in deliver'**
**/var/www/discourse/vendor/bundle/ruby/2.7.0/gems/actionmailer-6.0.3.3/lib/action_mailer/base.rb:589:in `block in deliver_mail'**