How to Automate Adding IPs and Domains in Anti-Spam Policies Using Microsoft Defender API?

Question

How to Automate Adding IPs and Domains in Anti-Spam Policies Using Microsoft Defender API?

Abinaya V G 0

Hi Everyone,

I am trying to automate the process of adding IP, Domain in the anti-spam policies in Microsoft Defender Portal. Right now these IP,Domain are manually added through the portal.

Whether there is any API available to automate the process or any other methods available for this process instead of manually adding each values.

Catherine Kyalo 3,180 Reputation points Microsoft Employee

2025-09-29T07:25:45.0533333+00:00

Hi @Abinaya V G ,

You can use PowerShell to script the process to read IPs/domains from a file or database and loop through them to add or remove entries as needed.

Use PowerShell to modify entries for domains and email addresses in the Tenant Allow/Block List

Your answer

Catherine Kyalo 3,180 Reputation points Microsoft Employee

2025-09-29T07:25:45.0533333+00:00

Hi @Abinaya V G ,

You can use PowerShell to script the process to read IPs/domains from a file or database and loop through them to add or remove entries as needed.

Use PowerShell to modify entries for domains and email addresses in the Tenant Allow/Block List