Re: test mail failed

This error message pops up if your SMTP server requires authentication to send an email notification to the recipient's email ID.

To authenticate the SMTP server, in your Vembu backup server go to Settings > Email > Configure, and click on Show Advanced Options. Then click on Enable Authentication checkbox and fill in the required details such as Username, Password, Authentication Type, Protocol Type, and Sender Email ID.

After filling all the information, click on Test Mail Server button, it will ask you to enter the To email address. Enter the receiver's email-ID and click Send Test Email.

To know more kindly refer to the following KB article.