Microsoft announced that Exchange Online will block old Exchange Servers by throttling and then rejecting their inbound email into Exchange Online. The hope is that this tactic will convince those who operate unsupported versions of Exchange Server to upgrade and use supported software that isn't vulnerable to known attack vectors.
Conditional Access policies are one of Microsoft's most versatile and flexible security features ever built. However, there’s one area that Conditional Access can help you protect that isn’t as well known—using IP restrictions to control where a specific app can be used.
In the third and final article in a series covering Git-based Source Control for Microsoft 365 Tenant Admins, Andy Schnieder covers how to leverage tools to streamline your workflow with Git and gain insight into some useful advanced techniques.