Script to automate installation & configuration of mailx

ost-setup-mailx.sh

#!/bin/bash

# Script     : ost-setup-mailx.sh
# Author     : Osh <faizal@myopensoft.net>
# Title      : Osh Automated Mailx Installer
# Description: Script to automate installation & configuration of mailx
# Target OS  : Centos 7

echo "Start Osh Automated Mailx Installer..."

yum -y update
yum install -y mailx

cat <<EOT >> /etc/mail.rc

set smtp-use-starttls
set smtp-auth=login
set smtp=smtp://smtp.gmail.com:587
set from="YOUR_GMAIL@gmail.com(YOUR_PROJECT_NAME)"
set smtp-auth-user=YOUR_GMAIL@gmail.com
set smtp-auth-password=YOUR_GMAIL_PASSWORD
set ssl-verify=ignore
set nss-config-dir=~/certs
EOT

cd ~
mkdir certs
certutil -N -d certs
wget https://www.geotrust.com/resources/root_certificates/certificates/GeoTrust_Global_CA.cer
mv GeoTrust_Global_CA.cer certs/
echo -n | openssl s_client -connect smtp.gmail.com:465 -CAfile certs/GeoTrust_Global_CA.cer | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > GMAILCERT
certutil -A -n "Google Internet Authority" -t "C,," -d certs -i GMAILCERT

echo "Complete!"

Change YOUR_GMAIL, YOUR_GMAIL_PASSWORD, YOUR_PROJECT_NAME to your actual settings

Then run chmod +x ost-setup-mailx.sh before running the script for the first time.