Catching spam mails into other mail accounts

In below example i have catched the all spam tagged emails for the domain siva.com into spammailbox@siva.com.

OPen the procmailc file in /etc

# nano /etc/procmailrc

# Catch the Spam Tagged Mail
:0:
* ^X-Spam-Flag: YES
! spammailbox@siva.com

addd the above entry in last ..

Thats it ….