chkuser to exit immediately

Hi
i successfully aplied chkuser to curent vpopmail & qmail,
i put the 'maxwrongrcpt' limit to just 2 attempts.

i noticed in the logs sometimes spamserver stubbornly keep trying to 
send, and chkuser keep denying it.

CHKUSER rejected intrusion: from <[email protected]::> 
remote <OGFZIZVEA:unknown:58.145.28.218> rcpt <dody.setyawan@****> : 
rcpt ignored, session over intrusion threshold

what i wanna know is, when this happen..
is it possible to just interrupt the smtp session, drop it and make
qmail forget about it ? e.g just "exit" the whole session ?
so it won't even bother to send bounce to the sender ?


Thanks.

!DSPAM:4c13187e32718163717911!