the registration from and verification from addresses are set the same. I even created an account with that name on the email server just in case it was balking at an "unknown" user.
the verification global subject is:
$WAGLOBAL_Verification_Email_Subject = "(domain) Email Verification" ;
the registration global subject is:
$WAGLOBAL_Registration_Email_Subject = "Welcome to (domain)" ;
the FROM is:
$WAGLOBAL_Verification_Email_FROM = "noreply@(domain).com" ;
$WAGLOBAL_Registration_Email_FROM = "noreply@(domain).com" ;
obviously, I've used (domain) here in place of the actual domain info