rblsmtpd conflict with ucspi -tcp

[shaolei]

when I install rblsmtpd-0.70-1.i386.rpm
it need qmail-smtpd>=qmail-smtpd>=1.03+patches-7,
after I install qmail-smtpd>=1.03+patches-16
it need ucspi-tcp>=0.86-1
so I install ucspi-tcp and qmail-smtpd
but when I tried to install rblsmtpd.
it reported conflict with ucspi-tcp
what can I do??