I’m getting the error “The SMTP server requires a secure connection or the client was not authenticated…” while trying to send an email. How do I resolve this?

You are trying to send an email or validate your email, and getting the error, “Cannot send mail. The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Please try again.”

This message typically appears if the email or password or both are incorrect. Please re-check them all.

This message can also appear if you use Gmail and Google is blocking the sign-in attempts due to Security Standards. In that case, you will need to generate App Password for your Gmail Account to validate the Email. Here’s how:

Click on the Google icon.
Then, click on “Manage your Google Account”.
Click on the “Security” tab.
Under the “Signing in to Google” section, make sure the 2-Step Verification is turned On. If it is not, then turn it on.
After turning on the 2-Step Verification, go back to the “Security” tab and click on “2-Step Verification”.
Enter your Google Account Password for Validation, if prompted, and click on “Next”.
In the “2-Step Verification” page, scroll down to the bottom and click on the “App Passwords” option.
Here, select “Other (Custom Name)” from the dropdown options.
Enter “Xorosoft” and click “Generate”.
A 16-digit App Password will be generated for your device. This password grants complete access to your Google Account.
Copy this Password and paste this into Xoro’s “Email Password” field on the Email Configuration Setup page.
Save the changes and Validate the Email.