Milter-greylist

Hi guys,

I have some big troubles with milter-greylist those days.

After a little more than 1020 threads it crashes or doesn't accept any
more connections
ulimits and so are correctly set, even stack size reduced to let place
for more threads

I get this error:
milter-greylist: greylist: accept() returned invalid socket (Numerical
result out of range), try again

What can I do then ?

(I get the same behavious with 3.0 and 4.0b1)