I have a 3 domain VPS. On one of my secondary domains (not the primary domain), I have a frontpage based website that sends an email after a visitor fills out a form and hits Send. When this email is received, the display name shows as mtfusion@mtfusion.com. I want to change this to something else. I am having trouble locating which config file to change for this problem. I have grepped just about everything I could think of.

Any advice is appreciated.