Hi, I'm trying to initialize an TDSL-Gateway. Masq. over SuSEFirewall and transpararent Proxy with Squid seems to work. (From MS-Client: Ping from DOS-Kommand-Line to Internet-Adress: REACHED; Internet-Surfing from Webbrowser over Squid and also Downloads) Before i'm going to install this Firewall in our 3-Man-Office, I'd like to test some things at home. Sendmail's running on my Workstation in the Office. In the future it should exchange it's eMails behind the Firewall. Which ports do I have to aktivate in Susefirewall (FW_SERVICES_EXTERNAL_TCP und FW_SERVICES_INTERNAL_TCP)? Do I have to fill-in other Parameters somewhere else? Which way is the best to test sendmail-Firewall-Passing ("telnet 'pop3-server_Internet' 110" or stupid MS-Outlook-Client or someth. else?) Thanx for help, Rene