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 ...
We have people that travel and I've been annoyed a lot with some hotels using ISPs that block SMTP port 25 traffic. The solution is having to talk the users through changing the default SMTP server ...