Lichen server requirements

• An IMAP server. The install instructions assume you've got this working and are able to log in to it using other software.
• A Web server, typically Apache
• PHP version 4.4 or higher; we recommend using PHP 5.2
• Your copy of PHP must have IMAP support built-in

Note that Lichen will require PHP 5.2 or higher from February 2008.

System-specific notes

• on most Linux distributions, you'll have to install a package called php-imap (or sometimes php5-imap). For example, on a Debian system run apt-get install php-imap as root.
• on Mac OS X, the bundled version of PHP lacks Gettext and IMAP support. Use a newer pre-built package instead.