> For the complete documentation index, see [llms.txt](https://pnpt.adot8.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pnpt.adot8.com/external-pentest-playbook/common-pentest-findings/open-mail-relays.md).

# Open Mail Relays

## Overview

This has to do with misconfigurations in a mail server that would allow us to perform a **mail relays.** It is more common to find "**Partially Open Mail Relays**" out there which can be used send an email from an external source address to an internal destination address **or** send an email from an internal source address to an internal destination address.

This can lead to phishing and scamming by using an internal email using their domain.

## Example

{% embed url="<https://www.blackhillsinfosec.com/how-to-test-for-open-mail-relays/>" %}
How to perform and explanations
{% endembed %}