I'm in the process of helping some developers port their php application from Linux to Windows (I know, string me up from the flag pole later). I have setup WAMP and everything is working fine with the exception of the mail() function. The code was originally developed on Linux and leveraged sendmail for the mail() function. What can I do to allow the php code to send mail from Windows? I have already tried installing the IIS SMTP service and that has not worked so far. The Windows box is Server 2008 R2 Standard, so IIS is 7.5 with the IIS 6.0 SMTP component.