Error while sending Test email " The SMTP server requires a secure connection"

Error while sending Test email " The SMTP server requires a secure connection"

Problem Statement:  

Getting error while sending Test email "The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 SMTP; Client was not authenticated to send".



Propose Solution: 

Please check the below information to solve the issue.


1: Make sure the Server Port number is correct.

2: Make sure the User Name and User Password is correct.

3: Make sure the email is allowed for less secure app access.


For Gmail, please refer below link: -



https://myaccount.google.com/lesssecureapps


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