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www_devopscheetah_com_how-to-create-mail-server-on-rhel-machine_

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  1. DevOpsCheetah Home Linux Cloud  Programming  Monitoring  CI/CD  Categories  How to Create Mail Server on RHEL Machine  May 24, 2021  Priyank Chauhan  0 Comment Below are the steps which you need to follow to build Mail Server on RHEL machine : [root@server ~]# yum remove sendmail Prerequisites: The mail server should contain a valid MX record in the DNS server. Firewall and SELinux should be disabled. [root@server ~]# service iptables stop [root@server ~]# service ip6tables stop [root@server ~]# chkconfig iptables off [root@server ~]# chkconfig ip6tables off We use cookies on our website to give you the most relevant experience by remembering your preferences Scenario and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent. Cookie Settings Accept All

  2. In this tutorial my test machine details Hostname     = server.ostechnix.com IP Address    = 192.168.1.200/24 And my server is configured with proper MX record in DNS server. POSTFIX [root@server ~]# yum install postfix [root@server ~]# vi /etc/postfix/main.cf edit main.cf file and replace the value myhostname = server.devopscheetah.com ##line no 75 – uncomment and enter your host name mydomain = devopscheetah.com  ##line no 83 – uncomment and enter your domain name  myorigin = $mydomain  ##line no 99 – uncomment inet_interfaces = all  ##line no 116 – change to all mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain  ##line no 164 – add $domain at the end mynetworks = 192.168.10.0/24, 127.0.0.0/8  ##line no 264 – uncomment and add your network range home_mailbox = Maildir/  ##line no 419 – uncomment

  3. Start the postfix service. [root@server ~]# service postfix start Starting postfix:                                          [  OK  ] [root@server ~]# chkconfig postfix on   Test Postfix The commands shown in bold letters should be entered by the user.  Note: The dot after the test command is important. [root@server ~]# telnet localhost smtp Trying ::1… Connected to localhost. Escape character is ‘^]’. 220 server.ostechnix.com ESMTP Postfix ehlo localhost 250-server.ostechnix.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN

  4. mail from:<user1> 250 2.1.0 Ok rcpt to:<user1> 250 2.1.5 Ok data 354 End data with <CR><LF>.<CR><LF> test . 250 2.0.0 Ok: queued as 117113FF18 quit 221 2.0.0 Bye Connection closed by foreign host. Check Mail Navigate to the user mail directory and check for the new mail. [root@server ~]# cd /home/user1/Maildir/new/ [root@server new]# ls 1360236956.Vfd00I35afM181256.server.devopscheetah.com [root@server new]# cat 1360236956.Vfd00I35afM181256.server.devopscheetah.com  Return-Path: <user1@devopscheetah.com> X-Original-To: user1 Delivered-To: user1@devopscheetah.com

  5. Received: from localhost (localhost [IPv6:::1])   by server.ostechnix.com (Postfix) with ESMTP id 117113FF18   for <user1>; Thu,  7 Feb 2013 17:05:32 +0530 (IST) Message-Id: <20130207113547.117113FF18@server.devopscheetah.com> Date: Thu,  7 Feb 2013 17:05:32 +0530 (IST) From: user1@devopscheetah.com To: undisclosed-recipients:; test Thats it. Postfix working now. Install Dovecot [root@server ~]# yum install dovecot Configure Dovecot Open the dovecot config file /etc/dovecot/dovecot.conf. Find and uncomment the line as shown below. [root@server ~]# vi /etc/dovecot/dovecot.conf protocols = imap pop3 lmtp Open the file /etc/dovecot/conf.d/10-mail.conf and uncomment the line as shown below.

  6. [root@server ~]# vi /etc/dovecot/conf.d/10-mail.conf mail_location = maildir:~/Maildir  ##line no 24 – uncomment Open the /etc/dovecot/conf.d/10-auth.conf and edit as shown below. [root@server ~]# vi /etc/dovecot/conf.d/10-auth.conf disable_plaintext_auth = no  ##line no 9 – uncomment and change from yes to no. auth_mechanisms = plain login  ##line no 97 – add the text “login” Open the /etc/dovecot/conf.d/10-master.conf and edit as shown below. vi [root@server ~]# vi /etc/dovecot/conf.d/10-master.conf unix_listener auth-userdb {     #mode = 0600     user = postfix  ##line no 83 – uncomment and enter postfix     group = postfix  ##line no 84 – uncomment and enter postfix Start the dovecot service. [root@server ~]# service dovecot start Starting Dovecot Imap:                                     [  OK  ] [root@server ~]# chkconfig dovecot on

  7.   Test Dovecot The commands shown in bold should be entered by the user. [root@server ~]# telnet localhost pop3 Trying ::1… Connected to localhost. Escape character is ‘^]’. +OK Dovecot ready. user user1 +OK pass user1 +OK Logged in. list +OK 1 messages: 1 428 . retr 1 +OK 428 octets Return-Path: <user1@ostechnix.com> X-Original-To: user1 Delivered-To: user1@ostechnix.com Received: from localhost (localhost [IPv6:::1])  by server.ostechnix.com (Postfix) with ESMTP id 117113FF18  for <user1>; Thu,  7 Feb 2013 17:05:32 +0530 (IST)

  8. Message-Id: <20130207113547.117113FF18@server.ostechnix.com> Date: Thu,  7 Feb 2013 17:05:32 +0530 (IST) From: user1@ostechnix.com To: undisclosed-recipients:; test . quit  +OK Logging out. Connection closed by foreign host. [root@server ~]#  Dovecot is working now. Install Squirrelmail Install EPEL repository first. And install SquirrelMail package from EPEL repository. [root@server ~]# wget http://dl.fedoraproject.org/pub/epel/6/i386/epel- release-6-8.noarch.rpm [root@server ~]# rpm -ivh epel-release-6-8.noarch.rpm  [root@server ~]# yum install squirrelmail [root@server ~]# service httpd start Starting httpd:                                            [  OK  ] [root@server ~]# chkconfig httpd on [root@server ~]#  Configure Squirrelmail

  9. Go to the squirrelmail config directory and use the command ./conf.pl to start configure as shown below. [root@server ~]# cd /usr/share/squirrelmail/config/ [root@server config]# ./conf.pl  SquirrelMail Configuration : Read: config.php (1.4.0) ——————————————————— Main Menu — 1.  Organization Preferences 2.  Server Settings 3.  Folder Defaults 4.  General Options 5.  Themes 6.  Address Books 7.  Message of the Day (MOTD) 8.  Plugins 9.  Database 10. Languages D.  Set pre-defined settings for specific IMAP servers C   Turn color off S   Save data Q   Quit Command >>1  Select option 1 and set organization details.

  10. SquirrelMail Configuration : Read: config.php (1.4.0) ——————————————————— Organization Preferences 1.  Organization Name      : Ostechnix 2.  Organization Logo      : ../images/sm_logo.png 3.  Org. Logo Width/Height : (308/111) 4.  Organization Title     : Welcome to Ostechnix webmail 5.  Signout Page           :  6.  Top Frame              : _top 7.  Provider link          : http://ostechnix.com 8.  Provider name          : Ostechnix R   Return to Main Menu C   Turn color off S   Save data Q   Quit Command >>R  Press R to return main menu and select option 2. Enter your domain name and select dovecot in the Sendmail or SMTP parameter. SquirrelMail Configuration : Read: config.php (1.4.0) ——————————————————— Server Settings General

  11. ——- 1.  Domain                 : ostechnix.com 2.  Invert Time            : false 3.  Sendmail or SMTP       : SMTP A.  Update IMAP Settings   : localhost:143 (uw) B.  Update SMTP Settings   : localhost:25 R   Return to Main Menu C   Turn color off S   Save data Q   Quit Command >> S Once you done, press S to save datas and press Q to exit. Add the following lines in the httpd.conf file at the end. [root@server ~]# vi /etc/httpd/conf/httpd.conf Alias /squirrelmail /usr/share/squirrelmail <Directory /usr/share/squirrelmail>     Options Indexes FollowSymLinks     RewriteEngine On     AllowOverride All     DirectoryIndex index.php     Order allow,deny     Allow from all </Directory>

  12. Restart the httpd service.  [root@server ~]# service httpd restart Stopping httpd:                                            [  OK  ] Starting httpd:                                            [  OK  ] [root@server ~]#  Create Users [root@server ~]# useradd user1 [root@server ~]# useradd user2 [root@server ~]# passwd user1 [root@server ~]# passwd user2 Open the browser from any clients. Type the following in the address bar. http://serveripaddress/webmail   Tags: Linux Mail Server , red hat enterprise linux , red hat linux , redhat linux , Rhel Mail server Leave a Reply Your email address will not be published. Required fields are marked * Comment

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