super was not called in #start: called it forcedly plugin=Fluent::MailOutput

[jigetage]

Hi, when I use mail plugin, there is a warning when starting fluentd. The warning message is: fluentd_1 | 2019-09-18 07:58:10 +0000 [warn]: #0 super was not called in #start: called it forcedly plugin=Fluent::MailOutput

Then, I met a sending email error, the error message is: fluentd_1 | 2019-09-18 07:58:26 +0000 [warn]: #0 out_mail: failed to send notice to smtp.partner.outlook.cn:587, subject: SERVER ERROR, message: Please check your webserver ASAP, error_class: Net::SMTPAuthenticationError, error_message: 504 5.7.4 Unrecognized authentication type [SHAPR01CA005.CHNPR01.prod.partner.outlook.cn] fluentd_1 | , error_backtrace: /usr/lib/ruby/2.5.0/net/smtp.rb:981:in `check_auth_response'

So weird, every step is based on official document... Could you help me to fix this? Any response will be highly appreciated. Thank you very much.

[FlyingKaenguru]

Were you able to find a solution? I have the same problem.

[jigetage]

Were you able to find a solution? I have the same problem.

Finally gave up on mail plugin. I used webhook plugin to receive alerts and send mail. Hope help ya~