felipfr awesome-n8n-workflows Limit Webhook Automation Webhook 1

![](https://uploads.n8n.io/templates/ipqualityscoretemplate.png)  
## **Analyze IP Address and Check Authentication Results**

This section analyzes the originating IP address and verifies the presence of essential email authentication headers. The `Gmail - Original IP Found?` node determines whether the extracted IP address is valid and non-empty. If valid, the workflow proceeds; otherwise, it triggers the `Skip IP Check` node to move on to the next steps.

The `Gmail - Query IP Quality Score API` node evaluates the IP’s reputation, identifying associations with spam, fraud, or other malicious activities. The `Gmail - Query IP API` node enriches the analysis by providing additional details such as geographic location and organizational affiliation of the IP. 

Finally, the `Gmail - Authentication-Results Header?` node checks for the presence of the "Authentication-Results" header, which indicates SPF, DKIM, and DMARC checks performed by the receiving email server. If present, the header is further analyzed in subsequent sections.