Just trying this out for the first time, I tried searching the forum for this topic but didn't find anything. Basically I installed Sugar CRM Community Edition Version 5.0.0f (Build 3338). Then my Windows Server 2003 Enterprise R2 server with Exchange enterprise edition stopped receiving mail. My windows server and exchange server are up to date, I am using SQL Express and IIS for the CRM. Anyone have any ideas what to do?