Hello, Just got a Windows Server 2008 R2 Standard (V-Server), where i set up Apache/Mysql and Filezilla Server (FTP). Not installed IIS. Gone that way, because with "IIS" i never did something, and heard for security, that apache is more stable. All working fine, except for mail. So now i need a mail server, and googled what to do now, because i never set up a mail server. I found out there exists "Mercury", and "Exchange". So i asked the Hosting Company whats the best way. They told "mercury" is slimmer for ressources than "exchange", but "exchange" is the richer solution. And i can install the "exchange" over the services snap-in. Googled another one, and found an instuction: (hxxp://(w)(w)(w).itsolutionskb.com/2008/11/installing-and-configuring-windows-server-2008-smtp-server/) where it says to install smtp server. (But wheres "exchange"?) If i would install smtp server, windows told, it needs "IIS". So when i install "IIS" now. Would my sites be still reachable? Or can there occur some Ports conflicts, or conflict with apache - IIS ? Don't have installed "IIS" at moment, i have fear nothing works anymore? Is this the right way, on this instructions? I don't know nothing about mailserver. :/ Could anybody please direct me in the right way? Thanks for any help!