[qmailtoaster] how to drop spam instead of bounce

[slamp slamp]

Is there a way to do this? i'm still having issues with my rollernet account being disabled due to toaster bouncing a spam e-mail to rollernet instead of the original sender. rollernet is my backup mx so spammers are using that instead of sending directly to my domain. if this can't be done, is there a way to whitelis on an smtp level? whitelisting through spamassassin does not work.

# cat /etc/tcprules.d/tcp.smtp
127.:allow,RELAYCLIENT=""
208.11.75.2:allow,SPFBEHAVIOR="1",QMAILQUEUE="/var/qmail/bin/simscan"
216.90.171.2:allow,SPFBEHAVIOR="1",QMAILQUEUE="/var/qmail/bin/simscan"
:allow,BADMIMETYPE="",BADLOADERTYPE="M",CHKUSER_RCPTLIMIT="50",CHKUSER_WRONGRCPTLIMIT="10",QMAILQUEUE="/var/qmail/bin/simscan"

Here is the log from rollernet.

	From: Queue To: [EMAIL PROTECTED]	Date: 2006-10-03 12:47:08
	Message: rejected by: bounced (host domain.com[69.xxx.xxx.xxx] said: 554 Your email is considered spam (12.50 spam-hits) (in reply to end of DATA command))