using RMAIL with an IMAP mail server

• fetchmail should already be installed, if not, here. It's a program that transfers e-mail from your IMAP server to your local disk
• create a file ~/.fetchmailrc with the following:
  poll <imap server> proto IMAP port <port> user <userid> ssl pass <password>
  
• maybe you won't need to specify the port number, maybe you won't need the ssl keyword
• run fetchmail -d 60 to run fetchmail as a daemon, polling for mail every 60 seconds
• you can put the above command in your .login, to make sure the daemon is started at every login
• note that you should also have sendmail running as a daemon