Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Fathi,
The two SRV records affect the Skype for Business Online service in Office 365. You can refer to the article below for more details.
If you don’t add the two records in your DNS hosting provider, it will block the ability to communicate with external users (Federated and PIC (Public Internet Connectivity)) using Skype for Business.
However, it will not affect the Exchange Online service which means you can configure and use your Office 365 account in Outlook client well.
Regards,
Yang