I read http://www.howtoforge.com/postfix_spf. This is an old HowTo and after reading the comments, I have some questions: - Is there any updated version? - Can I implement the installation through the package manager, without braking ISPConfig (apt-get install libmail-spf-perl postfix-policyd-spf-python) ? - Is it really have results? (The question goes to those who have tried this a lot)
No, but generally this hsould still work. It is possible that some Perl packages are now available through apt (like one of the comments says). Yes.
