http://messagewall.org/install.html stand right in front of sendmail. all-in-one solution: anti-spam, anti-virus, authenication, certification, ... . no need to fight with procmail and sendmail auth (if I did mis-understand her doc). any attempted using it? -- may the force, the farce and linux be with you. See you in news://news.hkpcug.org and http://www.linux-sxs.org