procmail and cyrus-imapd - Non-zero exitcode (65) ???

I'm trying to use procmail to filter and cyrus' deliver program to
deliver the mails to the imap accounts. I always get the above shown
exitcode. Can anyone tell me what that means? Can anyone give me an
example? I'm using cyrus-2.0.16 under FreeBSD 4.5 and
cyrus-sasll-1.5.27.

Thanks in advance,
    Manuel

-- 
I emerged from the woods that day into a different world, an adult world, 
where memories of first love linger, but summers always end. 
-Tim Madigan, "The Love I'll Never Forget" 
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