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The Simple Mail Transfer Protocol (SMTP) is a communication protocol for electronic mail transmission. The most commonly used implementations of SMTP in most Linux distributed OS are Sendmail and Postfix. Postfix is an open source mail-transfer agent that was originally developed as an alternative to Sendmail and is usually set up as the default mail server. Let's start with Postfix. Step:1 To verify the /etc/hosts file. # cat /etc/hosts 127.0.0.1 localhost localhost.locald

DHCP (Dynamic Host Configuration Protocol) is a network protocol that enables a server to automatically assign an IP address and provide other related network configuration parameters to a client on a network, from a pre-defined IP pool. There are a lot of use cases for the DHCP service. Let install and configure the DHCP services: Step1: To Install DHCP server packages # yum -y install dhcp Step2: Copy the sample configuration file to /etc/dhcp directory DHCP server # rpm -q

We might need to install and configure TFTP (Trivial File Transfer Protocol) service. TFTP has may use cases and PXE (Preboot Execution Environment) Boot is one of the Use cases. Let start. https://access.redhat.com/solutions/29005 Step1: To Install Required Packages, e.g. tftp-server # yum install tftp tftp-server* -y Step2: To verify the tftp server configuration files. # cat /usr/lib/systemd/system/tftp.service [Unit] Description=Tftp Server Requires=tftp.socket Documen