How to Install and Configure Postfix as a Send Only SMTP Server on Ubuntu 1.Introduction. Postfix is a mail transfer agent MTA, an application used to send and receive email.In this tutorial, we will install and configure Postfix so that it can be used to send emails by local applications only that is, those installed on the same server that Postfix is installed on.Why would you want to do that If youre already using a third party email provider for sending and receiving emails, you do not need to run your own mail server.However, if you manage a cloud server on which you have installed applications that need to send email notifications, running a local, send only SMTP server is a good alternative to using a 3rd party email service provider or running a full blown SMTP server.In this tutorial, youll learn how to install and configure Postfix as a send only SMTP server.Prerequisites. To follow this tutorial, you will need Note that your servers hostname should match this domain or subdomain.You can verify the servers hostname by typing hostname at the command prompt.The output should match the name you gave the Droplet when it was being created.Step 1 Installing Postfix.In this step, youll learn how to install Postfix.The most efficient way to install Postfix and other programs needed for testing email is to install the mailutils package.First, update the package database Finally, install Postfix.Installing mailtuils will install Postfix as well as a few other programs needed for Postfix to function.Near the end of the installation process, you will be presented with a window that looks exactly like the one in the image below.The default option is Internet Site.Thats the recommended option for this tutorial, so press TAB, then ENTER.After that, youll get another window just like the one in the next image.The System mail name should be the same as the name you assigned to the server when you were creating it.If it shows a subdomain like subdomain.When youve finished, press TAB, then ENTER.After installation has completed successfully, proceed to step two.Step 2 Configuring Postfix.In this step, youll read how to configure Postfix to process requests to send emails only from the server on which it is running, that is, from localhost.Step 3 Database connection configuration Copy configdatabase.Postfix is a mail transfer agentMTA, an application used to send and receive email.In this tutorial, we will install and configure Postfix so that it can be.How To Install Smtp' title='How To Install Smtp' />
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