How do you configure the system to use a Real Time blackhole list?

A.
run sysconfig -r proxy RBL=address

B.
use TCPIP SET CONFIG SMTP/OPTIONS=(RBL=address)

C.
configure SMTP using SYS$MANAGER:TCPIP$CONFIG.COM

D.
edit SYS$SPECIFIC:[TCPIP$SMTP]SMTP.CONFIG and add RBLs line