Analyze email headers for IPs and spoofing

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This n8n workflow is designed to analyze email headers received via a webhook. The workflow splits into two main paths based on the presence of the received and authentication results headers. In t...

Best for

SecOps automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.webhook, n8n-nodes-base.stickynote, n8n-nodes-base.code, n8n-nodes-base.respondtowebhook, n8n-nodes-base.itemlists, n8n-nodes-base.httprequest, n8n-nodes-base.set, n8n-nodes-base.switch

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by n8n Team.

Original n8n.io source

1.1 Workflow description

Title: Analyze email headers for IPs and spoofing
Workflow name: Analyze email headers for IPs and spoofing

This n8n workflow is designed to analyze email headers received via a webhook. The workflow splits into two main paths based on the presence of the received and authentication results headers.

In the first path, if received headers are present, the workflow extracts IP addresses from these headers and then queries the IP Quality Score API to gather information about the IP addresses, including fraud score, abuse history, organization, and more. Geolocation data is also obtained from the IP-API API. The workflow collects and aggregates this information for each IP address.

In the second path, if authentication-results headers are present, the workflow extracts SPF, DKIM, and DMARC authentication results. It then evaluates these results and sets fields accordingly (e.g., SPF pass/fail/neutral).

The paths merge their results, and the workflow responds to the original webhook with the aggregated analysis, including IP information and authentication results.

Potential issues during setup include ensuring proper configuration of the webhook calls with header authentication, handling authentication and API keys for the IP Quality Score API, and addressing any discrepancies or errors in the logic nodes, such as handling SPF, DKIM, and DMARC results correctly. Additionally, thorough testing with various email header formats is essential to ensure accurate analysis and response.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Receive Headers

Type / Role: n8n-nodes-base.webhook - webhook
Config choices: Version 1

Block 2 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 3 - Fraud Score

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 4 - Respond to Webhook

Type / Role: n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices: Version 1

Block 5 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 6 - Explode Email Header

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 7 - Split Out IPs

Type / Role: n8n-nodes-base.itemLists - itemLists
Config choices: Version 3

Block 8 - Extract IPs from "received"

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 9 - IP Quality Score

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.1

Block 10 - IP-API

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.1

Block 11 - Collect interesting data

Type / Role: n8n-nodes-base.set - set
Config choices: Version 2

Block 12 - SPF/DKIM/DMARC from "authentication-results"

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 13 - SPF from "received-spf"

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 14 - DKIM from "dkim-signature"

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 15 - DMARC from "received-dmarc"

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 16 - DKIM

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 1

Block 17 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 18 - Extract Email Header from webhook

Type / Role: n8n-nodes-base.set - set
Config choices: Version 2

Block 19 - Sticky Note5

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 20 - Sticky Note6

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 21 - Sticky Note8

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 22 - Sticky Note10

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 23 - Received Headers Present?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 1

Block 24 - Authentication Results Present?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 1

Showing the first 24 of 35 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Analyze email headers for IPs and spoofing
Complexity	advanced
Nodes	35
Categories	SecOps
Author	n8n Team
Published	27 Nov 2023

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/1991/1991.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source SecOps workflows

Frequently asked questions

What does Analyze email headers for IPs and spoofing do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your SecOps use case.

n8n Team

90 workflows

Nodes

n8n-nodes-base.webhook n8n-nodes-base.stickynote n8n-nodes-base.code n8n-nodes-base.respondtowebhook n8n-nodes-base.itemlists n8n-nodes-base.httprequest n8n-nodes-base.set n8n-nodes-base.switch

Complexity

advanced

Published 27 Nov 2023

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/1991/1991.json

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Analyze email headers for IPs and spoofing

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Receive Headers

Block 2 - Sticky Note

Block 3 - Fraud Score

Block 4 - Respond to Webhook

Block 5 - Sticky Note1

Block 6 - Explode Email Header

Block 7 - Split Out IPs

Block 8 - Extract IPs from "received"

Block 9 - IP Quality Score

Block 10 - IP-API

Block 11 - Collect interesting data

Block 12 - SPF/DKIM/DMARC from "authentication-results"

Block 13 - SPF from "received-spf"

Block 14 - DKIM from "dkim-signature"

Block 15 - DMARC from "received-dmarc"

Block 16 - DKIM

Block 17 - Sticky Note4

Block 18 - Extract Email Header from webhook

Block 19 - Sticky Note5

Block 20 - Sticky Note6

Block 21 - Sticky Note8

Block 22 - Sticky Note10

Block 23 - Received Headers Present?

Block 24 - Authentication Results Present?

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions