If your MX records are not pointed to the correct location, you will not receive an email.

In simple DNS terms, an MX record is used to tell the world which mail servers accept incoming mail for your domain and where emails sent to your domain should be routed to. Mail Exchange (MX) records are DNS records that are necessary for delivering email to your address. What you have to know also, that ports can be blocked and opened in two ways, incoming and outgoing, the following diagram will make things clearer: so In order to use a certain service, we need to open that port in the firewall. and so on.īy default, all servers and computers have a firewall running which blocks all ports except the ones you want. When you surf the web and open websites, we use port 80.Connecting to a Linux machine remotely to manage it with SSH, uses port 22.SQL database systems like MYSQL on our computer works over port 3306.Connecting remotely to another Windows Machine using RDP software works over port 3389.Any network service or software uses a certain port to communicate over the internet or network. I don't want to bother your head within deal technical stuff but in short. I mentioned that the VPS must have port 25 opened, what does this mean? Note: If you are interested in learning how to host your own websites on a VPS server, you canĪnyway, In our case, we will be using the VPS Server for Building an SMTP server.

So now I think It's SUPER clear, we are going to learn how to build the first part of any email marketing system which the SMTP server. So we connect both together to get an Email Marketing System. The Management Application, where you can configure and manage your Email Lists, Marketing Campaigns, monitor and analyze results, manage your sending servers, and so on.It allows you to send emails over the internet.

The sender: (SMTP service) this is the technical part.I think it's clear, but just in case, and As I explained in my Techincal Email Marketing guide, any Email marketing system consists of two parts: Let's connect things, how this is related to email marketing? Just Know that SMTP is the technical thing that is responsible for delivering emails over the internet. It's a Concept in Networking that you don't have to worry about. SMTP stands for “Simple Mail Transfer Protocol”. Simply, SMTP is that thing that allows you to send emails over the internet. I don't like robotic definitions like Wikipedia, I love to make things simple. It's Like “cPanel” but for free! What is the SMTP Server? There are several methods to build SMTP servers, in this guide I will build the SMTP server using a free WHM (web hosting manager) software called “Webmin”. In this Step by Step Guide, I will show you how to setup an SMTP server and connect it to your email marketing applicaiton to send emails with no limits*.

Setting up aws email server