Unable to receive OTP using passwordless email provider mailgun suddenly

Ready to post? :magnifying_glass_tilted_right:Everything was working fine suddenly was not receiving otp on the mails, and in the logs two logs come for every hit one saying code/link sent second failed to send notification which is creating and issue for me can anyone help

Hi @aniket2

Welcome to the Auth0 Community!

Can you try to test the integration with Mailgun? Dashboard → Branding → Email Providers and click on Send Test Email. Is it successful or does it fail?

Thanks!
Dawid