![]() ![]() If you don’t have the certbot package installed already, do so by typing the command: sudo apt install certbot While you can purchase a certificate from any other authority, I always prefer Certbot by Let’s Encrypt, because it is free and easy to use. This SSL certificate will authenticate the identity of the mail server to users and encrypt the transmitted messages between the user’s mail program and the mail server. The good thing is, we already have the tool Certbot installed for the FTPs and HTTPs servers and we are going to use it again to create a self- signed certificate. Install SSL Certificateīefore installing Dovecot, our MDA and Pop3/Imap server, we need to install a SSL certificate. Set as an A record pointing to your server IP or CNAME to .Īnother important step is to add ip address to /etc/hosts/ 127.0.0.1 localhost.localdomain localhostĭon’t forget to change with your ip and mydomain. ![]() Set the hostname or for, then the hostname or IP address of the mail server. Then we add MX (Mail Exchange) records for all the domain we are going to receive emails for. The first important step is to set a DNS record for your mail server. Also, we need a running MariaDB or MySQL server to store our domains and email addresses. We will use Postfix as a MTA, and then will setup Dovecot as a mail delivery agent (MDA). IMAP, POP3- Manages the connections with the users as they are reading their email messages. Gets the emails from the MTA queue and delivers it the individual mail boxes of the users. It also accepts the emails that come from the outside world and adds it to the MTA queue of your server. ![]() It gets the emails from your server and delivers it to the outside world. Without getting into details, mail servers send and receive messages using three major components: The guide is for Debian/Ubuntu based distros, but it will include some of the Centos 7.x tools and commands as well. #Spamassassin postfix how to#This article is a detailed manual on how to set up manually a secure email server using Postfix, Dovecot, and the open version of MySQL – MariaDB. ![]()
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