Milter-greylist

Using libspf2 with milter-greylist 4.0 on a Fedora Core 6 machine
causes the milter to crash within a couple of minutes. Before that
time, it is fully functional. Without spf support (nospf), the system
is does not crash

The issue does not seem to be related to thread safety issues of the
dns resolver.

When installing the exact same binaries (through rpm builds) on a
Pentium machine running Fedora 7, milter-greylist is stable even when
enabling spf.

The machine that milter-greylist crashes on is based on a 32 bit
Athlon processor.

Any ideas?