Hi, all. Thanks for all warmhearted guys and all the replies. I will test sqlgrey and milter-filter later. Thanks for all your help. PS. I set up a OpenBSD 4.2 -release (i386) box before, in my opinion, the spamd(8) in base system is great than others. ---- Best Regards Zhang Huangbin - OpenBSD 4.2 -release, i386. - RHEL 5.1