Hello, I am a Linux noob, so bear with me please. I have a small Windows Server 2003 domain (MSserver.mysite.com), which I use for MS Exchange, for MSOffice compatibility and the Exchange Calendar features. That's basically all I use it for. However, because Exchange uses MS Active Directory, the Windows 2003 Server has to be setup as the primary DNS for the network. That is okay, I know how to use it and create the lookup zone for the Ubuntu box (LinuxServer.mysite.com) running Apache2. This is where it gets hairy. When setting up the Ubuntu server I realized that in order for my websites to send mail and passwords, etc. I would need to include the setup step for Postfix and IMAP/POP3 Couriers, I think. My question is: Is there a way to route all outgoing mail from the websites hosted on LinuxServer.mysite.com through MSserver.mysite.com? I don't think I will have a problem catching the incoming mail with Exchange. Can someone tell me how I might modify my Ubuntu setup to handle this? Thanks.