Enable IMAP services with Maildir

Now we will implement an imap server.  The big advantage to using imap won't become apparent until we configure our webmail server, but we do need it.

# portinstall mail/courier-imap

when the option screens display, ensure you enable mysql support!

In case you use authpam, you should put the following lines in your /etc/pam.d/imap

# echo 'account    required        pam_unix.so        try_first_pass' >> /etc/pam.d/imap
# echo 'session    required        pam_permit.so' >> /etc/pam.d/imap

The default has courier-imap listening an ALL IP addresses.  To have it listen on only the host's IP, add the following (using your host's real IP of course).  ***NOTE*** For Squirrelmail users, when you set the host IP here, you MUST configure Squirrelmail's IMAP Server with the same host IP (not the 'localhost' default) or courier-imap will refuse your connection.

# nano +24 /usr/local/etc/courier-imap/imapd

ADDRESS=192.168.1.xxx

# nano +96 /usr/local/etc/courier-imap/pop3d

ADDRESS=192.168.1.xxx

Enable courier-imap to start on boot by adding this to rc.conf.

# echo 'courier_imap_imapd_enable="YES"' >> /etc/rc.conf
# echo 'courier_authdaemond_enable="YES"' >> /etc/rc.conf

Also, if you want the POP3 service, add this to rc.conf as well.

# echo 'courier_imap_pop3d_enable="YES"' >> /etc/rc.conf

reboot your system to ensure everything loads up correctly.

# reboot

Log back in and check to see if the services are running by seeing if the port shows LISTENING

For IMAP

# netstat -a|grep imap

For Pop3

# netstat -a|grep pop3

We now have an IMAP server running with Maildirs.  Next step is to get a webmail server working on this installation!