Hello, I know this is a very minor thing but I was just setting up a mail server and noticed that by default, SuSE's postfix mail.cf is set to show OS/softwareinfo. Most security professionals recommend that all such banners be disabled, since banners can sometimes be quite helpful to crackers. The offending lines in /etc/postfix/main.cf are: mail_name = Postfix on SuSE Linux 7.1 (i386) smtpd_banner = $myhostname ESMTP $mail_name Running netcat quickly reveals this info: jw@testbox:~ > netcat xxx.xxx.xxx.xxx3 25 220 servicemail123.com ESMTP Postfix on SuSE Linux 7.1 (i386) I suggest commenting out mail_name and setting smtpd_banner to wither nothing or $myhostname, or some other such harmless thing. Consider carefully what really belongs there. P.S. Is "ESMTP" actually needed for anything? I don't know that much about mail protocols. ---------------------------------------------------- Jonathan Wilson System Administrator Cedar Creek Software http://www.cedarcreeksoftware.com Central Texas IT http://www.centraltexasit.com