[GitHub] [dolphinscheduler] litiliu opened a new issue, #10698: [Bug] [Alert] fail to send email, when use don't enable smtp auth

[GitBox]

litiliu opened a new issue, #10698:
URL: https://github.com/apache/dolphinscheduler/issues/10698

   ### Search before asking
   
   - [X] I had searched in the 
[issues](https://github.com/apache/dolphinscheduler/issues?q=is%3Aissue) and 
found no similar issues.
   
   
   ### What happened
   
   After user creating an email alert instance with mail.smtp.auth not enabled. 
 Then use that warning group(contain this email warning instance)  to send 
alert.But,  the email fail to send.
   <img width="560" alt="Screen Shot 2022-06-30 at 16 37 00" 
src="https://user-images.githubusercontent.com/38579068/176632286-7c359662-56e8-4f17-9bce-8a0b4069b950.png";>
   
   Which is caused by the unnecessary requireNonNull checking:
   <img width="1095" alt="Screen Shot 2022-06-30 at 16 38 42" 
src="https://user-images.githubusercontent.com/38579068/176632666-1f28c287-1e69-4f2b-9215-69cec76254b0.png";>
   
   
   
   
   ### What you expected to happen
   
   Successfully send email, when smtp.auth is not enabled.
   
   ### How to reproduce
   
   Creating an email alert instance with mail.smtp.auth not enabled.  Then use 
that warning group(contain this email warning instance)  to send alert.
   
   ### Anything else
   
   _No response_
   
   ### Version
   
   2.0.5
   
   ### Are you willing to submit PR?
   
   - [X] Yes I am willing to submit a PR!
   
   ### Code of Conduct
   
   - [X] I agree to follow this project's [Code of 
Conduct](https://www.apache.org/foundation/policies/conduct)
   


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