Mail Server Using Postfix, Dovecot, Squirrelmail On Red Hat 6

        1.      List and Version of Packages:

         postfix-2.6.6-2.el6.x86_64

         dovecot-2.0-0.10.beta6.20100630.el6.x86_64

         squirrelmail-1.4.6-1.norlug.noarch

        2.      Postfix Installation and Configuration

      yum install postfix

      vim /etc/postfix/main.cf

          Main.cf file should be look like this

      myhostname = mail.demoslice.com

      mydomain = demoslice.com

      inet_interfaces = all

      mydestination = $myhostname, localhost.$mydomain,                   localhost, $mydomain

      mynetworks = 10.10.10.0/24, 127.0.0.0/8

      home_mailbox = Maildir/

   At the end of main.cf

      smtpd_sasl_type = dovecot

      smtpd_sasl_path = private/auth

      smtpd_sasl_auth_enable = yes

      smtpd_recipient_restrictions =  permit_mynetworks,

      permit_sasl_authenticated,

      reject_unauth_destination

      broken_sasl_auth_clients = yes

          4.      Dovecot Installation and Configuration

yum install dovecot

   vim /etc/dovecot/dovecot.conf

           Dovecot.conf should look like this

  protocols = imap pop3 lmtp

       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 = 0666

         user = postfix

         group = postfix

 vim /etc/dovecot/conf.d/10-auth.conf

       auth_mechanisms = plain login

 vim /etc/dovecot/conf.d/20-pop3.conf

      pop3_uidl_format = %08Xu%08Xv

            pop3_client_workarounds = outlook-no-nuls oe-ns-eoh

         5.      Installing and Configuring Squirrelmail

       yum install squirrelmail

       /usr/share/squireelmail/config/config.pl

        Then enter D and enter dovecot

        Now press 2 and enter domain name.