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Installation

We will use Courier-IMAP server. Version 4 of Courier IMAP has not been tested by author, if you know the steps to install it feel free to contribute them.

Download

cd /usr/local/src
wget http://200.4.48.8/pub/mail-tools/qmail/imap/courier-imap-3.0.8.tar.bz2

Courier-IMAP must not be compiled by root users, but by any other non privileged user.

cd /usr/local/src
tar xvfj courier-imap-3.0.8.tar.bz2
chown -R no_root_user courier*
su no_root_user
export CPPFLAGS=-I/usr/local/include/  
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cd courier-imap-3.0.8
./configure --enable-unicode=iso-8859-1,utf-8
make
make check

† the export commands are only necessary in FreeBSD.

Once compiled, install it as root:

exit
cd courier-imap-3.0.8
gmake install
gmake install-configure

† gmake is only needed in FreeBSD, in Linux you can use either, gmake or make.

Configuration

The next step is to create the configuration files:

cp /usr/lib/courier-imap/etc/imapd.dist /etc/imapd.config

Edit /etc/imapd.config and set the next value:

MAXPERIP=20

Create an init directory:

mkdir /usr/lib/courier-imap/runscript

Create /usr/lib/courier-imap/runscript/run with the next content:

#!/bin/sh

IPADDR="0.0.0.0"
exec_prefix=/usr/lib/courier-imap
. /etc/imapd.config

exec tcpserver -c 100 -l 0 -v -R $IPADDR imap \
<a href="http://www.flashpapers.com/">Term Papers</a>
  /var/qmail/bin/auth_imap \
  ${exec_prefix}/bin/imapd Maildir 2>&1

Make it executable and link it:

chmod +x /usr/lib/courier-imap/runscript/run
ln -s /usr/lib/courier-imap/runscript /service/imapd

Check activity

svstat /service/imapd
/service/imapd: up (pid 92820) 20 seconds

Test with telnet:

telnet 127.0.0.1 143
...
a1 login your_login *****
a2 select inbox    

where your_login is a valid username and **** is a valid password.

This will autocreate the IMAP directories: Trash, Drafts y Sent.