Why Create Your Own Mail Server?

There are many reasons why you should setup your own cloud mail server:

  • Privacy: When you setup your own mail server, you know that you are the only mailbox on that server sending mail. This means that you can be confident that the privacy of the server is optimal.
  • Security: Managing your own cloud mail server means that you can maintain the highest level of security. When other mail users are on the same server, you never know what security policies may be compromised.
  • Reliability: When you create your own cloud mail server, you never have to worry about other users sending abusive mail on the server. This ensures reliability and uptime can be easily maintained.

What You’ll Need

Server Requirements

Our cloud mail server will require the following server specs:

Minimum server requirements:

  • 1GHz processor
  • 1GB+ RAM
  • 5GB Disk Space

Recommended Server Requirements:

  • 2GHz processor
  • 4GB RAM
  • 100GB Disk Space

See Also: (Live Webinar) Meet ServerMania: Transform Your Server Hosting Experience

Preparing for Installation

We’ll start by ordering a Cloud or Dedicated Server from ServerMania.com – this will be the server that will host the email server software.

If you’re setting up an email server for yourself, then a Cloud Server is typically the best choice. It’s a slice of a dedicated server. It combines the power of a dedicated server with the price of a virtual server. Cloud Servers start at just $5/month, and when you consider that you can use the server for multiple activities like creating your own VPN, setting up your own cloud backup, or hosting a website, it’s a great deal.

If you’re setting up an email server for your business, then you may wish to consider a Dedicated Server. Dedicated Servers start as low as $50/month and it’s a server completely dedicated to you. It’s the perfect choice for those looking for the ultimate in power and server performance.

Under Products / Services, simply navigate to the server type you wish to select, pick a server, and click customize.

Hybrid servers table

During checkout, select the latest version of Debian or CentOS as the operating system:

email server pricing chart

Your Cloud Server will be ready in a few minutes after order verification, and Dedicated Servers are typically provisioned within 8-24 hours.

Once you have received the login credentials for your Cloud or Dedicated Server from ServerMania, you must perform the following tasks:

Configuring DNS Records

When configuring DNS on a domain, you have the option of using free nameservers that are included with most domain registrars, or you can use an external DNS provider like CloudFlare.

Using the Domain Registrar’s DNS

Login to your domain registrar and navigate to the DNS records for the domain you wish to setup email. We will use “example.com” to represent your domain.

You will need to configure the following DNS records:

  • Set the nameservers of example.com to your domain registrar’s nameservers.
  • Setup the mail.example.com A record to the primary IP of the server with us
  • Set the MX record of example.com to mail.example.com

Using An External DNS Provider

Login to your DNS provider and navigate to the DNS records for the domain you wish to setup email. We will use “example.com” to represent your domain.

You will need to configure the following DNS records:

  • Set the nameservers of example.com to your external DNS provider’s nameservers
  • Setup the mail.example.com A record to the primary IP of the server with us
  • Set the MX record of example.com to mail.example.com

If you have changed the domain nameservers, allow 24-48 hours for these DNS records to propagate before you will be able to send and receive email fully. You can add your server IP to your hosts file in order to manage the server while you wait.

screenshot of host file which reads 'host database' 'localhost is used to configure the loopback interface' when the system is booting do not change this entry ' local host'

Unblocking Port 25 and Reverse DNS Records

Please contact support in order to unblock port 25 on your server. You must also request that the reverse DNS records of your server IP be set to mail.example.com, the hostname of your server.

Mail Server Installation

We’ve created a free video course which walks you through every step of the email server setup process. Click here to view it for free.

Step 1: Login to SSH on the server

If you are using Linux or Mac, you can use the built in terminal to connect with the following command:

ssh root@server-IP

If you are using Windows, you can download PuTTy to connect to the server via SSH.

Step 2:  Update system packages 

apt-get update

Step 3: Install curl and git

apt-get install curl git

Step 4: Download Docker

curl -sSL https://get.docker.com/ | CHANNEL=stable sh

Step 5: Download Docker Components

curl -L https://github.com/docker/compose/releases/download/$(curl -Ls https://www.servercow.de/docker-compose/latest.php)/docker-compose-$(uname -s)-$(uname -m) > /usr/local/bin/docker-compose

Step 6: Update Docker permissions to executable

chmod +x /usr/local/bin/docker-compose

Step 7: Make sure your umask equals 0022.


Look for output 0022

Step 8: Change into /opt directory

cd /opt

Step 9: Download Mailcow Files

git clone https://github.com/mailcow/mailcow-dockerized

Step 10: Change into Mailcow directory

cd mailcow-dockerized

Step 11: Generate Configuration File


Provide the hostname of the mail server that you wish to use. IE: mail.example.com

Step 12: Pull the images

docker-compose pullscreenshot of images being extracted in Docker

Step 13: Run the composer file. The parameter -d will start mailcow: dockerized detached:

docker-compose up -d

Installation is now complete. You can login to mail.example.com with username admin and password moohoo.


Login to mail.example.com with the above username and password to get started.

Mailcow login page

Change Admin Password

password change option in MailCow

Once logged in, click the edit button next to the admin user in order to set a unique password.

Set Domains and Users

configuration on Mailcow

Click on Configuration in the top right-hand corner and click Mail Setup in order to create email domains and addresses.

add domain configuration in MailCow

Click Add Domain in order to create an email domain. You’ll start by creating example.com, and can add as many email domains as you’d like.

add domain button in MailCow

Once you have filled out the domain configuration details, click Add domain and restart SOGo.

add mailbox button in MailCow

Next you can click the Mailboxes tab in order to add email users. Click Add Mailbox.

Accessing The Mailbox


Once the mailbox has been created, you can use the webmail interface at http://mail.example.com/SOGo/ to send and receive email, check calendar, and manage your address book:

calendar in mailcow

mailcow calendar screenshot

Email Client Setup

You can also use your favourite mobile or desktop email client to send and receive mail.

Configuration instructions for Android, IOS, and a variety of Mac and PC clients can be found here.

Next Steps and Support

Your mail server is now installed and configured! Need help? Contact our support team at any time and we’d be happy to assist you.