Milter (relaydelay): to error state && perl: relaydelay: st_optionneg

Hi all... I´m try to use relaydelay-0.0.4. I´m using the configuration 
below:

sendmail:8.12.5(with libmilter)
relaydelay-0.0.4
perl:5.8.0(usethreads=define)

But sometimes I got this error

<syslog_error>
milter_read(relaydelay): cmd read returned 0, expecting 5
Milter (relaydelay): to error state
Milter (relaydelay): init failed to open
Milter (relaydelay): to error state
</syslog_error>

<messages_error>
perl: relaydelay: st_optionneg[79125424]:0x1f does not fulfill action 
requirements 0x3f
</messages_error>

Please tell me how to remove this error...

thank you.

Marco Antônio [[email protected]]