Mail For Exchange
"Nokia offered a crude Exchange client for Symbian (Mail for Exchange) for years, but has folded the functionality into Nokia Messaging, a subscription email service based on its $430m Intellisync acquisition in 2005. So you can't get decent Exchange access out of the box, for free."
Nokia still offer Mail for Exchange, it's a free download from the Nokia's store (OviStore), it's still current and has seen updates as recently as February of this year. Feel free to check the Release Notes and Admin Guide on the Nokia website, it's got most of the features down including Folders, Remote Wipe and GAL. The noticeable missing features are 2010 support (but supposedly it works) and server-side search. It's not particularly polished and it's not up to WinMo standards, but it's perfectly usable, even on the E71. While not "out of the box" per se, it's pretty damn close considering you open OviStore and download it for free direct to the handset...