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' />For that to happen, Postfix needs to be configured to listen only on the loopback interface, the virtual network interface that the server uses to communicate internally.To make the change, open the main Postfix configuration file using nano or your favorite text editor.With the file open, scroll down until you see the following section.Change the line that reads inetinterfaces all to inetinterfaces loopback only.Another directive youll need to modify is mydestination, which is used to specify the list of domains that are delivered via the localtransport mail delivery transport.By default, the values are similar to these etcpostfixmain.The recommended defaults for that scenario are given in the code block below, so modify yours to match etcpostfixmain.Save and close the file.If youre hosting multiple domains on a single server, the other domains can also be passed to Postfix using the mydestination directive.However, to configure Postfix in a manner that scales and that does not present issues for such a setup involves additional configurations that are beyond the scope of this article.Finally, restart Postfix.Step 3 Testing the SMTP Server.In this step, youll test whether Postfix can send emails to an external email account using the mail command, which is part of the mailutils package that was installed in Step 1.To send a test email, type echo This is the body of the email mail s This is the subject line youremailaddress.In performing your own tests, you may use the body and subject line text as is, or change them to your liking.However, in place of youremailaddress, use a valid email address.The domain part can be gmail.Now check the email address where you sent the test message.You should see the message in your inbox.If not, check your spam folder.Note that with this configuration, the address in the From field for the test emails you send will be sammyexample.Linux username and the domain part is the servers hostname. Latest Weather Update In Pakistan on this page. If you change your username, the From address will also change.Step 4 Forwarding System Mail.The last thing we want to set up is forwarding, so youll get emails sent to root on the system at your personal, external email address.To configure Postfix so that system generated emails will be sent to your email address, you need to edit the etcaliases file.The full contents of the file on a default installation of Ubuntu 1.See man 5 aliases for format.With that setting, system generated emails are sent to the root user.What you want to do is edit it so that those emails are rerouted to your email address.To accomplish that, edit the file so that it reads etcaliases See man 5 aliases for format.Replace youremailaddress with your personal email address.When finished, save and close the file.For the change to take effect, run the following command You may now test that it works by sending an email to the root account using echo This is the body of the email mail s This is the subject line root.You should receive the email at your email address.If not, check your spam folder.Conclusion. Thats all it takes to set up a send only email server using Postfix.You may want to take some additional steps to protect your domain from spammers.If your use case is to receive notifications from your server at a single address, emails being marked as spam is a major issue because you can whitelist them.However, if your use case is to send emails to potential site users such as confirmation emails for a message board sign up, you should definitely set up SPF records and DKIM so your servers emails are more likely to be seen as legitimate.If configured correctly, this makes it difficult to send spam with an address that appears to originate from your domain.Doing these additional configuration steps will also make it more likely for common mail providers to see emails from your server as legitimate.SMTP for Windows 7 smtp mail server.Unlike the former versions, Windows 7 does not come with a native SMTP service.You can however install and set up another outgoing server to send your emails in particular, a professional service like turbo.SMTP will enhance your deliverability and make sure that all your messages get to their intended recipient.And heres how to configure an SMTP server for Windows 7 1.Open IIS Managers Featurs View.Open SMTP E mail.Type the sender address and select Deliver e mail to SMTP server.In the text field, write the server name for instance pro.Select the port port 2.Select your authentication mode.Click Apply. And thats it, you can start sending out emails with Windows 7.
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