Server Requirements

• Apache, Lighttpd (>=1.4.13 for SSL), Cherokee or Hiawatha web server
• Directory on the Web server allowed to run scripts
• If using Apache, .htaccess support or configuration to override DirectoryIndex
• PHP version 5.2.1 or greater with
  • PCRE (Perl-Compatible Regular Expressions)
  • Session support
  • Socket support
  • MySQL, PostgreSQL, or SQLite database engine
  • iconv (recommended)
  • OpenSSL (recommended)
  • Mbstring (optional)
  • FileInfo (optional)
  • Mcrypt (optional)
• php.ini options:
  • memory_limit > 16MB (increase as suitable to support large attachments)
  • file_uploads enabled (for attachment upload features)
  • session.auto_start disabled
  • zend.ze1_compatibility_mode disabled
  • suhosin.session.encrypt disabled
  • mbstring.func_overload disabled
  • magic_quotes_runtime disabled
• If using MySQL or PostgreSQL, a database server and database user with permission to create tables
  • If using MySQL 5.0.2 or later, disable STRICT_TRANS_TABLES and STRICT_ALL_TABLES
• OpenSSL and Socket modules for PHP required to connect to secure IMAP or IMAPS, for secure SMTP and to use the spell checker
  • Additionally, the CURL module for PHP is required for spell checking with TinyMCE (HTML WYSIWYG Editor).
• An IMAP server which supports IMAP 4 rev 1
• An SMTP server (recommended) or PHP configured for mail delivery

Browser Requirements

• JavaScript? enabled
• Accept cookies
• Support for XMLHttpRequest
• CSS2 Support

Tested browsers

• Internet Explorer 6 (Windows 2000/XP)
• Internet Explorer 7 (Windows XP)
• Internet Explorer 8 (Windows XP/7)
• Internet Explorer 9+ (Windows 7)
• Safari 3+ (Mac OS X 10.5 and Windows XP)
• Firefox 3+ (Windows XP, Linux, and OpenSolaris)
• Google Chrome 9+ (Mac OS X, Windows 7)

Browsers reported to work

• Camino 1.5.x (Mac OS X 10.4)
• Opera 9.25 (Windows Server 2003, Windows XP, and FreeBSD 6)
• Opera 9.30 (Wii, TinyMCE is non-functional)
• Opera 9.60 (Windows XP)
• Opera 11.x (Windows XP/7, Mac OS X)