How-to remove the port 25 restriction on your EC2 instance

Introduction

This article aims to assist server administrators that use AWS. By default, Amazon blocks port 25 outbound on EC2 instances. As a result, email will be unable to send outbound unless a smart host is configured.

Procedure

You can use the following link to send a request to Amazon to lift the restriction on port 25:

How do I remove the restriction on port 25 from my EC2 instance?