Hi, I am an independent advisor and welcome to Microsoft Q&A.
I understand you need to know if the Microsoft email you received is real or not.
It looks like a phishing attempt.
@Infomail(s).Microsoft.com is not a legitimate Microsoft Domain. It should not have an S in Infomail.
"Is this email phishing?
Emails from the domains below are genuine Microsoft communications and relate to personal OneDrive (onedrive.com).
@mail.onedrive.com
@notificationmail.microsoft.com
@infomail.microsoft.com"
"If you still believe the email is phishing, copy and paste the phishing scam message into a blank new message as an attachment and send it to ******@office365.microsoft.com"
Source link: https://learn.microsoft.com/en-us/troubleshoot/azure/general/email-domains-support-agent