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Page title (without namespace) (page_title) | 'A Step-By-Step Guide On How To Set Up An Smtp Server In Linux' |
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New page wikitext, after the edit (new_wikitext) | 'Electronic mail or e-mail is a crucial aspect of your business communication. If you are using it for personal reasons or if you're a home - business web-based email service may suffice, however in the case of a large business, like an e-commerce site, then the use of a dedicated mail server may be required.<br><br>There are numerous advantages when you install an SMTP server in Linux server. These are just some of the numerous benefits that a Linux mail server can provide:<br><br>Extremely fast, reliable, secure and scalable.<br>Does not require expensive hardware.<br>Supports POP3, IMAP, and web mail access.<br>You can install a powerful anti-spam filter and an effective antivirus to make your computer more secure.<br><br>There are a variety of ways to configure and run the server to meet your requirements. However, I consider Postfix to be one of the easiest open-source mail transfer agents (MTA) to install and also the most reliable. It can be deployed in a single-user or in multiple user environments at the same time. It's extremely flexible and works well in every environment.<br><br>A step-by-step guide for setting up an CentOS 7 mail server<br>Before beginning, you must update your system and install epel release in your server.<br><br># yum update - y.<br><br>yum Install Epel-release<br><br>Installation<br>These steps will enable you to install Postfix mail server easily:<br><br>1.) Install postfix packages by typing:<br><br>yum install postfix - you<br><br>That's all! Once the installation is completed, the Postfix daemon will begin automatically for you. You are able to test it after the installation is completed.<br><br># telnet localhost 25<br><br>It could be something similar to:<br><br>Trying ::1...<br>Connected with localhost<br>'^]'. Escape character<br>220-mail.znettest.tk ESMTP Exim 4.89_1 #1 Tue, 20 Feb 2018 13:29:17 +0530<br>220-Unsolicited travel is not allowed.<br>220 and/or bulk emails<br><br>Note This is the case: mail.znettest.tk is the hostname for this server.<br><br>Configuring SMTP server in Linux<br>Configuring Postfix<br><br>A configuration file is needed to configure Postfix mail servers: /etc/postfix/main.cf. This contains all the information about the mail service.<br><br>Open the file using vi or another text editor and then look for the next section:<br><br>vi /etc/postfix/main.cf<br><br>Myhostname=<br>inet_interfaces= all<br>inet_protocols = Ipv4<br>alias_maps = hash: /etc/aliases<br>mydestination =<br>mynetworks =<br><br>These are the sections of the configuration file you must be paying attention to. In my opinion that there's nothing anything to configure. Below are the sections you'll need to set up:<br><br>myhostname: This parameter defines the name of the Internet hostname for the mail daemon. The default setting is to use a fully qualified domain name.<br><br>Mydestination: This parameter identifies what destinations the server will deliver to locally. Make use of the local configuration that was defaulted in the server . Change the localhost to the domain name.<br><br>MyNetworks: This option is a little more risky. This entry will define authorized destinations that mail can be transmitted [http://hmsay.com/index.php?page=user&action=pub_profile&id=520742 Read From The Link]. If you're thinking of add your subnet here, there are partial chances of its success.<br><br>You can go with mynetworks entry which looks like:<br><br>mynetworks = 127.0.0.1/8<br><br>The above entry is a secure entry and defines local machines only.<br><br>The inet_interfaces parameter specifies the addresses of network interfaces that it uses to receive mail. The software will automatically check that the active interfaces are available. The parameter also regulates the delivery of the mails to the user@[ip.address[ip.address].<br><br>inet_protocols= IPv4<br><br>It is by default set to IPv4 to allow for faster delivery of mails.<br><br>Close and save the vi editor. After that, you can start/activate the mail service with the command so it is Active following the server reboot.<br><br>systemctl restart postfix<br><br># systemctl enable postfix<br><br>Installation of mail service has been completed. Now is the time to create a user and test it.<br><br>Create users<br><br>This is an Linux mail server so you should ensure that your user name is in line with the email addresses you use. You can create users with the command:<br><br>useradd useradd USERNAME (USERNAME is the real name of the user).<br><br>The next step is to give the username and password with the command:<br><br>passwd USERNAME<br><br>Test Your Server<br><br>Mail utils package to install the things needed to send out mail by using the command:<br><br>Yum install mail x - y<br><br>You can now test any email ID you want to try by typing:<br><br>Mail (mailid)<br><br>It will ask for the question. Enter the message you wish to send.<br><br>When you're done, exit the mail and close it with the dot (".")<br><br>Your mail server is set to deliver mails as per your needs.<br><br>SMTP relays are able to allow multifunction printers, devices and programs for sending electronic mails using Office 365 or Exchange Online. And with ZNetLive, you get different Microsoft Office 365 plans as according to your requirements to run your business efficiently from anywhere and anytime.' |
