Email Ouput: AUTH Unrecognized authentication type

Elastic Stack Logstash
1

Hi Logstash team,

I have been using Logstash 7.4.2 version without problem with output email plugin
I updated ELK stack version to 7.5.2 in last week due to some Vulnerability.
But i am facing the bellow errors when try to send a notification email.

Has any breaking change which related to this problem?
i am researching about it, and read logstash release notes but has no related issue.

Is this one issue which may be caused?
#11115

Thanks and looking forward to your answer.

Something happen while delivering an email {:exception=>#<Net::SMTPAuthenticationError: 504 5.7.4 Unrecognized authentication type

`
[2020-01-27T07:46:25,753][ERROR][logstash.outputs.email ] Something happen while delivering an email {:exception=>#<Net::SMTPAuthenticationError: 504 5.3.3 AUTH mechanism PLAIN not available

}
`

Something happen while delivering an email {:exception=>#<OpenSSL::SSL::SSLError: hostname "xxxx" does not match the server certificate>}

  • Version: 7.5.2
  • Platform: Docker
  • Operating System: Linux, SMTP (Not required Authentication)
  • Config File (if you have sensitive info, please remove it):
    Mail output:
email {
    from => abc@sample.com
    body => "Mail content"
    to => "john@sample.com"
    subject => "System notification"
    codec => "plain"
    contenttype => "text/plain; charset=UTF-8"

    #SMTP server
    address => "127.0.0.1"
    port => 25
}

* Sample Log:
`SMTPAuthenticationError: 504 5.7.4 Unrecongnized authentication type`
2

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