Abnormal Authenicate code sender Detected -"YunCertify"

Today, I received a password reset required alert from my Microsoft app, and I proceeded with the password change. Until this change, all authentication codes were received from the official Microsoft WhatsApp sender, and the authentication process worked without any issues from the beginning.

For easier code validation, I had enabled mobile number verification instead of using the Microsoft Authenticator app. However, after changing the password, during the next verification step, I received the authentication code from a sender named "YunCertify".

This was unusual and unexpected behavior from my side. However, when I submitted the code, it was successfully validated by my Microsoft 365 account.

I would like to confirm whether this is an expected Microsoft behavior (for example, using a third-party messaging provider), or if this could indicate any phishing or security-related issue.

Kindly review and provide your confirmation. Please find the attached screenshot as evidence.

But before change i got from this official channel