Dear ZMailers, I've implemented the policy based filtering in smtpserver. The modified C sources, context diffs, and configuration files are in ftp://ftp.sztaki.hu/pub/private/kissg/zmailer/ The patched ZMaler version is 2.99.45. It is running in a Solaris 2.5 environment without any problems for almost 5 hours. :-) Regards Gabor