How to set up your own Postfix mail server on VPS UBUNTU: step by step

We would like to set up a Postfix mail server on a UBUNTU VPS, but we are not entirely sure if it will work. Setting up a Postfix mail server on a VPS with Ubuntu, especially when it comes to someone with no experience or a novice specialist, is a process that is notoriously difficult. However, if you follow the instructions carefully and successfully complete all the necessary steps, you are guaranteed to be able to successfully deploy your own server. Below, we offer a more detailed look at each stage of this configuration process.

Server preparation

First of all, you must select a VPS hosting service and install Ubuntu. You can choose from VPS hosting services such as DigitalOcean, Linode, or Hetzner. Next, it is important to install the latest version of Ubuntu LTS. After that, you need to configure the basic environment:

• Using SSH, connect to the server. To do this, use

• Then be sure to update the system itself. Use the following code for this:

• The final stage of setting up the base environment is installing the basic tools using a combination of

Installing Postfix

The next step is to install Postfix using a combination of

During installation, don’t forget to review the settings. To do this, first select the “Internet Site” type, and then enter your server domain.

Configuring DNS records

At this stage, you need to visit the domain’s DNS control panel and add the following important records:

• MX record

• SPF record, namely

• DKIM. To do this, you must install OpenDKIM.

Don’t forget about the DKIM settings in Postfix. Don’t ignore the need to generate keys. Then add them to DNS.

• And last but not least – the DMARC record. Use

Postfix configuration is another important step in the setup process.

First, you need to edit the main configuration file. To do this, use the following combination

Don’t forget about such important parameters as:

After configuration, you need to restart the Postfix you configured earlier. To do this, perform the following action:

What other steps need to be taken when setting up your own Postfix mail server on UBUNTU VPS?

The next important step is the optional installation of Dovecot.

After installation, configure Dovecot. To do this, edit the /etc/dovecot/dovecot.conf file to enable IMAP and POP3.

After completing these steps, restart Dovecot using

Next, you must test the server and check that you can receive mail via a web client or email client. In addition to all this, you also need to take care of protecting the mail server. To start with, you should configure the UFW firewall. Open the necessary ports using:

Then it is important to install anti-spam and anti-virus software: SpamAssassin

and ClamAV

Be sure to activate all necessary services.

The final step in setting up your own mail server is support with monitoring. For effective monitoring, use the following logs

Be sure to remember to update the server regularly using

Conclusions

Thanks to these fairly simple steps, you can not only set up but also maintain your own Postfix-based mail server at any time. If you have any questions or need help with setup, please contact us. We will be happy to help you resolve any issues. We have many years of experience in this field, so we guarantee high-quality work.

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