So I use Hostrocket to host my site. They offer very limited SMTP capabilities...I can receive everything, but checking mail is sorta of a drag, and really encourage users to use alternate SMTP ...
I've got a Windows Server 2008 R2 machine (VM actually, 2x2.66GHz Nehalem vCPUs, 4GB RAM) that needs to relay about a million emails per day (busy website sending out lots of notifications). Bandwidth ...