ISPmail Jessie tutorial

Postfix provides the ability to apply filters during the SMTP session. When an email arrives at your mail server the following steps are usually run through: CLIENT: Incoming TCP connection on port 25 HELO The sending mail server tells you its name. MAIL FROM The sender’s name and email address of the email RCPT TO […]

About MX entries So now you have your working mail server. But how do emails find you? The answer lies in the most important service on the internet: DNS. Assume that you are the owner of the gmail.com domain. And a mail server somewhere on the other end of the internet wants to send an

(Hint: The ISPmail guide now uses LMTP to exchange emails between Postfix and Dovecot. It is a much simpler and also better performing way.) In a previous chapter we made sure that Postfix knows which emails it is allowed to receive. Now what to do with the email? It has to be stored to disk for

Now that you have a valid key and certificate you are ready to set up your web server. You will need it for the Roundcube webmail interface and – if you like – the PHPMyAdmin database management interface. The Apache web server installation on Debian stores all virtual host configurations in /etc/apache2/sites-available/. There are two files

You already have a perfectly working mail server by now. But every serious email provider does something about the insane amount of spam. With this new solution this has become simpler and way more reliable. We are not only using real-time blacklists any more Previous versions of the ISPmail guide relied a lot on real-time blacklists

(If you are unfamiliar with the abbreviation “TLS“: it is the successor to SSL.) The internet is the best invention since sliced bread but it has become an evil place more than ever. We are dealing with script kiddies, out-of-control secret services and organized crime on a large scale. It is completely out of the question

Your server should now be booted up and ready. You can now login at the console. But I personally prefer to login from my workstation via SSH. Use the “johndoe” user (or whatever you named it) to login. To become root and be able to install software packages run… su – …and enter the root

If you rented a virtual server at your favorite hosting company then you already have a ready installation of Debian Jessie. Feel free to skip this page → Basic installation and partitioning Installing Debian Jessie is easy. Get a boot medium from the Debian website. The smaller network installer is sufficient – it will download all

This is the most boring but also most important page of the entire tutorial. Most problems that readers have with their mail servers are caused by a misunderstanding of the different types of email domains. There is nothing you need to do to your server right now. Just lean back and relax and make sure that

The mail server that you are about to set up uses several software components. Let me first explain briefly what the purpose of each software is: Debian “Jessie” – the operating system Postfix received incoming emails from the internet and sends out outgoing emails to other mail servers SpamAssassin runs sanity checks on an incoming email to determine