To Configure a Mail Server on RHEL v9 m/c ...

Mail Server is?a software program that sends and receives email. Often, it is used as a blanket term for both mail transfer agents (MTA) and mail delivery agents (MDA) Within the Internet email system, a message transfer agent, or mail transfer agent, or mail relay is software that transfers electronic mail messages from one computer to another using the Simple Mail Transfer Protocol.

mail server setup requirement

• launch a machine on AWS by redhat image

• add port in aws security (smtp=25, imap=143, pop3=110)

• set a hostname # hostnamectl set-hostname mail.shubhamgupta.online

Rhel 9 EPEL configure

# dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm -y

• DNS configure By the help of Route53 AWS service

• entry in aws name server in hostinger child nameserver

#?yum install bind bind-utils -y

# nslookup mail.shubhagupta.online

# yum install postfix telnet s-nail -y

# systemctl enable --now postfix

# yum install vim wget -y

#?vim /etc/postfix/main.cf

# systemctl status postfix

# systemctl restart?postfix

yum install -y dovecot

# systemctl enable --now dovecot

# vim /etc/dovecot/dovecot.conf

?^ protocols = imap pop3 lmtp submission

# vim /etc/dovecot/conf.d/10-mail.conf

?^??mail_location = maildir:~/Maildir

# vim /etc/dovecot/conf.d/10-master.conf

?^?unix_listener /var/spool/postfix/private/auth {

??mode = 0660

??user = postfix

??group = postfix}

#vim /etc/dovecot/conf.d/10-auth.conf

?^ disable_plaintext_auth = no

# systemctl restart dovecot

# useradd shubham

# useradd gaurav

# passwd shubham

# passwd gaurav

# wget

https://downloads.sourceforge.net/project/squirrelmail/stable/1.4.22/squirrelmail-webmail-1.4.22.tar.gzmv squirrelmail-webmail-1.4.22/* .

# yum install httpd -y

# cd /var/www/html/

# tar -xvf /root/squirrelmail-webmail-1.4.22.tar.gz

# mv squirrelmail-webmail-1.4.22/* .

# yum install perl -y

# ./configure

redhat test page show becoz you have this squirrelmail script in php so you have to uinstall php v7.4

# systemctl restart httpd

# cd

# setenforce 0

# yum install -y https://rpms.remirepo.net/enterprise/remi-release-9.rpm

# rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm

# yum install -y https://rpms.remirepo.net/enterprise/remi-release-9.rpm

# yum module list php

# yum module enable php:remi-7.4 -y

# php -v

# yum install -y php php-cli php-common

# yum module list php

# yum module enable php:remi-7.4

cd /var/www/html/

# systemctl restart httpd

# systemctl restart postfix

# systemctl restart dovecot

cd /var/local/

# mkdir -p squirrelmail/data

# chown -R apache squirrelmail/

# systemctl restart httpd

# systemctl restart postfix

# systemctl restart dovecot

I want to Secure my mail-server

# yum install certbot python3-certbot-apache mod_ssl -y

# systemctl restart httpd

**** if you want to SSL/TLS?of ypur domain then you will have to do virtual host of your mail server ************

# vim /etc/httpd/conf.d/mail.conf

?^ <virtualhost *:80>

??servername mail.shubhamgupta.online

??documentroot /var/www/html

??RewriteEngine on

??RewriteCond %{SERVER_NAME} =mail.shubhamgupta.online

??RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]

??</virtualhost>

# vim mail-le-ssl.conf

??^ <IfModule mod_ssl.c>

???<virtualhost *:443>

???servername mail.shubhamgupta.online

???documentroot /var/www/html

SSLCertificateFile /etc/letsencrypt/live/mail.shubhamgupta.online/fullchain.pem

? SSLCertificateKeyFile /etc/letsencrypt/live/mail.shubhamgupta.online/privkey.pem

???Include /etc/letsencrypt/options-ssl-apache.conf

???</virtualhost>

???</IfModule>

#??certbot?--apache

#??systemctl restart httpd