@communication.microsoft.com is one of Microsoft's official email domains used to send emails containing account notifications, service updates, and terms of service changes.
However, simply looking at the sender's address is not 100% sufficient to determine email security, as sender information can be spoofed. We recommend checking the following:
Confirm that the links in the email actually point to the official Microsoft domain, for example:
Do not enter your password or verification code in the email. Instead, directly access your Microsoft account to view notifications:
https://account.microsoft.com/security
If the email content only mentions "Updated Terms of Use/Agreement of Service" and does not request login, payment, or personal information, it is generally a normal notification from Microsoft.