Milter-greylist

I habe two Servers (CentOS release 5.5 (Final)) on both i compiled milter-greylist-4.2.6. Both servers are identical patch wise.

On one of the two server milter is running since 3-sep-2010 and on the other it crashes after 3-4 hours.

If i start milter-greylist with -D it's running stable....

any idea what the issue could be?

./configure --with-libbind --with-libspf2 --with-libGeoIP --with-libcurl --with-user=smmsp --enable-dnsrbl --with-libpthread

/usr/local/bin/milter-greylist -P /var/milter-greylist/milter-greylist.pid -p /var/milter-greylist/milter-greylist.sock -D