Postfix Configuration ├────────────────────────┐   
  │                                                                         │   
  │ Please select the mail server configuration type that best meets your       
  │ needs.                                                                      
  │                                                                             
  │  No configuration:                                                          
  │   Should be chosen to leave the current configuration unchanged.            
  │  Internet site:                                                             
  │   Mail is sent and received directly using SMTP.                            
  │  Internet with smarthost:                                                   
  │   Mail is received directly using SMTP or by running a utility such         
  │   as fetchmail. Outgoing mail is sent using a smarthost.                    
  │  Satellite system:                                                          
  │   All mail is sent to another machine, called a 'smarthost', for            
  │ delivery.                                                                   
  │  Local only:                                                                
  │                                                                             
  │                                 <Ok>