Aunthaction failed when sending mail tally

It sounds like you're experiencing an issue with sending a mail tally, and the authentication process failed. Can you please provide more details about the error message you received? This will help me better understand the issue and provide a more accurate solution.

Here are some questions to help me gather more information:

1. What is the exact error message you received when sending the mail tally?
2. Are you using a specific email client or service to send the mail tally?
3. Have you recently changed any settings or configurations related to email authentication?
4. Are you using a specific authentication method, such as SMTP or IMAP?
5. Have you tried sending the mail tally using a different email client or service?

Once I have more information, I'll do my best to help you troubleshoot the issue and resolve the authentication failure.