---
title: Why do my headers fail DKIM when using the MxToolbox Header Analyzer?
description: Why do my headers fail DKIM when using the MxToolbox Header Analyzer?
---

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# Why do my headers fail DKIM when using the MxToolbox Header Analyzer?

There is a known problem with messages from Google GSuite/Gmail where the header gets altered when you copy the message, causing it to fail DKIM. Please use the guide below to get your message headers without the changes made by Google.

How to download the EML file from Google GSuite/Gmail:

1\. Locate your message in the Google GSuite/Gmail inbox and click it.  
2\. Locate the three (3) vertical dots at the upper right.  
3\. Click the dots and choose “Show Original”.  
4\. Click the “Download Original” link.  
5\. Save the .eml file on your computer.  
6\. Open the .eml file with a text editor, such as Windows Notepad or TextEdit for Mac.  
7\. Copy all of the text in the file.  
8\. Paste the text into the Header Analyzer at https://mxtoolbox.com/EmailHeaders.aspx

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