Postfix Mail Server Configuration In Linux Step By Step In Centos

How to configure dns server in rhel 7 or rhel 8 step by step.

Postfix mail server configuration in linux step by step in centos.

How to configure dns server in rhel 7 step by step. Email protected service iptables stop email protected service ip6tables stop email protected chkconfig iptables off email protected chkconfig ip6tables off. Navigate to this link how to setup dns server. Sudo dnf install postfix.

Make changes to the following lines. It is time we configure postfix mail server. Install bind centos 7 or centos 8. Several steps are necessary to configure the postfix server the basic steps involved in this process are.

Set postfix selinux permission. If postfix is already running on your server then skip installing postfix. Determine local mail delivery method. Setting up postfix smtp relay on centos rhel first let s install postfix smtp server on centos rhel with the following command.

The mail server should contain a valid mx record in the dns server. Dns server configuration in linux step by step centos. Step 6 configure postfix mail server. Configure forward zone file and reverse zone file using named chroot using centos or rhel 7.

Step 4 follow the below steps one by one for creation. The above selinux boolean will allow postfix to write to the mail spool in the central server. Create an aliases table. Alternatives set mta usr sbin sendmail postfix step 2 configure postfix.

Firewall and selinux should be disabled. Edit the master cf file. The default configuration allows local mailing only but that in itself is very useful on a machine used by many users and even if there is no such traffic many services dump their reports and messages into e mails which is delivered to the root user locally so the sysadmin will be. Edit the main cf file.

Dns server configuration in linux step by step centos. Root mail mkdir etc postfix ssl root mail cd etc postfix ssl root krizna ssl openssl genrsa des3 out server key 2048. Although the same steps should work on rhel and scientific linux 7 distributions. Configure postfix mail server centos rhel 7 8 now we are done with all the pre requisites.

However if you want send receive mails to outside you should configure the mail server with a public ip and request your isp to configure the mx record of your mail server in their dns server. We need to make a few changes in the configuration file so open it using your favorite text editor. Systemctl l status postfix journalctl xn postconf n. After package installation continue with postfix configuration.

Restart the service on both servers for the changes to take effect. First create ssl certificate for encryption. Let s start postfix configuration. Alternatives set mta usr sbin postfix if above command not work and you get the output as usr sbin postfix has not been configured as an alternative for mta.

Systemctl restart postfix if postfix does not start correctly you can use following commands to troubleshoot. I tested this setup on centos 64 bit server. Use below command to do the same else skip it.