Originally Posted by till
1) Test your server, if its an open relay:
2) Which tutorial did you use to setup your server?
3) Do you run any cms systems or websites which use contact forms on this server? If yes, make sure that you installed the latest updates for these systems in case there is a bug in the scripts that allow the relaying of spam.
when testing for open relay i got this message : All tests performed, no relays accepted.
2)The Perfect Server - CentOS 5.4 x86_64 [ISPConfig 3]
3)I don't think so because i just installed according to the tutorial nothing more and nothing less