The major difference is the maximum information store size and number of mailbox stores permitted. Exchange Standard with SP2 allows you a single mailbox store maximum size 75GB. http://www.google.com/search?hl=en&q=exchange+standard+enterprise+difference Match #1. -----Original Message----- From: Javier Sola [mailto:jsola@xxxxxxxxxxxxxx] Sent: Thursday, December 08, 2005 12:00 PM To: [ExchangeList] Subject: [exchangelist] Exchange Standard vs Enterprise All, I'm setting up an exchange box at my house, just for a lab and testing purposes. I have Exchange Standard and Enterprise versions as part of my microsoft action pack and before i have researched i wanted to ask here which one should i use? Remember this is a lab setup at home with 6 clients and 1 server. Anyone off the top of their head can tell me the major differences between enterprise and standard? Thanks!