The configuration will depend on which kind of RaQ we install it on.  However, you can be assured that we will install and compile PHP so it gives you optimum performance.  The installation includes support for GD, ImageMagick, XML, MySQL, PostgreSQL, MSSQL.  Installed PHP is ready for use with Horde/IMP. 

We can also recompile PHP with custom configuration.  Please email us for details.