Hello, I have a Debian Lenny server with lastest ISPConfig 3 on it. I got a problem with lots of spam from on some of the mail accounts from its own domain, but from another server, So I would like to use SPF on the server. I have setup the dns for the domain with following: "v=spf1 ip4:xxx.xxx.xxx.xxx a mx -all" But I still got a lot of spam mail, how can I ensure that postfix does the SPF check? And if its now installed, how can I enable / install it? When I installed the server I followed this guide: http://www.howtoforge.com/perfect-server-debian-lenny-ispconfig3
