> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abusix.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Microsoft Exchange

To add Guardian Mail.

Add the following code below as described in the following [Microsoft Support Documentation](https://docs.microsoft.com/en-us/powershell/module/exchange/antispam-antimalware/add-ipblocklistprovider?view=exchange-ps):

```
Add-IPBlockListProvider -Name "Abusix" -LookupDomain <APIKEY>.combined.mail.abusix.zone -RejectionResponse "Source IP address is listed by Guardian Mail" -AnyMatch $true
```

Replace “APIKEY\*\*”\*\* with “**Your API key”** from your account in [app.abusix.com](http://app.abusix.com).