ENABLING MAILDIR, CONFIGURING IMAP AND POP
------------------------------------------

1. Edit the file "main.cf" (using vi or ee)

	Add the following lines to main.cf:

	home_mailbox = Maildir/

2. Create a Maildir folder for the sysadm user:

	(DO THIS AS THE SANOG USER!)

	$ mkdir /home/sysadm/Maildir
	
	Note: if you do not do this as the sysadm user,
	the mail system will NOT be able to deliver mail.

3. Try sendmail mail again to your domain:

	$ echo "test with maildir" | mail -s "test maildir" sysadm@MYNAME.ws.nsrc.org

	* Now, run mutt again:

	$ mutt

	... do you see your mail ?

	No, the reason is that now the mail is not stored in /var/mail,
	but in the "Maildir/" directory in your home dir.

	To access it, first quit mutt ('q'), then relaunch mutt like this:

	$ mutt -f ~sysadm/Maildir/

	... this explicitly tells mutt to access the "Maildir" in the
	home (~) directory of the user "sysadm".

	Why Maildir ?  It's a better mail storage format when many mails
	need to be accessed quickly - one email / file on the disk.


	But what if you want to read your mail remotely ?

4. Install and configure the Courier IMAP daemon

	# apt-get install courier-imap

	When asked about the web-enabled configuration file, say NO

	It should now be started!

5. You may now use mutt to read your mail via POP, and IMAP

	* First, tell mutt NOT to attempt SSL negotiation:

	$ echo 'set ssl_starttls = no' > /home/sysadm/.muttrc

	(We have not configured an SSL certificate yet, therefore we need
	to disable this option for the time being)

	Now, run mutt:

	POP:

	$ mutt -f pop://sysadm@pcX			(where pcX is your own machine)
	Password for sysadm@pcX: 

	IMAP:

	$ mutt -f imap://sysadm@pcX			(where pcX is your own machine)
	Password for sysadm@pcX: 

	... you can now read your mail remotely, and you can also read mail
	on other machines:

	$ mutt -f pop://sysadm@pcY			(where pcY is another machine in the room)
	or
	$ mutt -f imap://sysadm@pcY			(where pcY is another machine in the room)

6. Open another window (or terminal), and log in as 'root'.

	* Now, run tcpdump so you can see the contents of the traffic on
	  the POP (110) and IMAP (143) ports:

	# tcpdump -X -s0 -n port 143 or port 110

	* Now ask someone else to read mail on YOUR server

	* What do you observe in the tcpdump window ?

7. Try to setup your mail program on your laptop (Outlook, Thunderbird, ...) to
   read mail on your newly installed POP/IMAP server!