We are currently upgrading our mail servers, an sql server, and our CRM package. Needless to say we are in the market for a few new servers. Is there any advantage to getting server 2003 R2 on them or should we stick with 2003 sp1. I know from symantec's site that the 10.0 version we are running will not run on R2 but not sure if there are any others. 4 of these 6 servers are mail servers so the need for the antivirus/spam filtering is a must have. Any thoughts?