Assignment: 
Install and configure an email system.

Requirements: 

• Install a new system for use as an MTA.
• Configure the system to act as the incoming MTA for the domain.
• Configure the system to act as the outgoing MTA for the local network.
• Configure the system for remote email reading.
• Configure the systems in the local network to relay all email through the system.

Install a new system for use as an MTA: 

• Create another virtual system and install the server operating system.

Configure the system to act as the incoming MTA for the domain: 

• Configure the exim4 software to receive email.
• The server should accept email for users at your domain. (e.g. user@example.com)
• The server should accept email for users at any of the hosts in your domain. (e.g. user@mybox.example.com)
• The DNS should be configured to direct email for all hosts in your domain to this system.

Configure the system to act as the outgoing MTA for the local network: 

• Configure the exim4 software to send email.
• Messages sent from the server should appear to come from users at your domain. (e.g. user@example.com)
• The server should relay email for users at any of the hosts in your domain. (e.g. Email from user@mybox.example.com should be relayed to its destination.)
• The server should send all outgoing email through sol.cs.dixie.edu.

Configure the system for remote email reading: 

• Configure the uw-imapd software to provide IMAP remote mail reading.
• Only allow connections to IMAP through the encrypted port.

Configure the systems in the local network to relay all email through the system: 

• On each existing system, configure the exim4 software to use your MTA as a smarthost.
• On each existing system, the MUAs mailx and mutt should be installed.

Pass-off Procedure: 

• Create a user on each of the systems. Use the same password for each system.
• Using the CIT submission system, submit a file to IT3100, SMTP.
• The file should be named smtp_info.txt. This file must be a plain text file, with the following format:

  mta: ip_address_of_MTA
  
  user: user_name_created_for_passoff
  
  pass: password_for_user
  
  hosts: ip_address_of_host1, ip_address_of_host2, ...
  
  domain: name.of.domain
  

  For example, a file may look like this:

  mta: 144.38.212.50
  
  user: bonzai
  
  pass: $&^bbi13
  
  hosts: 144.38.212.48, 144.38.212.49, 144.38.212.50
  
  domain: horgoth.com
  

• Each of ip addresses in the hosts list must have a valid reverse DNS entry!
• Several email messages will be sent to the user at each of the hosts listed.
• Several email messages will be sent from the user at each of the hosts listed.
• Email messages that are not correctly delivered will cause points to be deducted from the assignment.