Postfix + SPF

Enable SPF if you believe you need it.. For your information, SPF is not widely used

You’ll need Mail::SPF::Query : `1. perl -MCPAN -e shell

1. Under CPAN : install Mail::SPF::Query
2. Quit CPAN after installation of the library`

Install libspf2-1.0.4 and libspf2-devel-1.0.4 from http://www.city-fan.org/ftp/contrib/libraries/

wget http://spf.pobox.com/postfix-policyd.txt -O /etc/postfix/spf-policy.pl

chmod 755 /etc/postfix/spf-policy.pl

Edit /etc/postfix/master.cf : spfpolicy unix - n n - - spawn user=nobody argv=/usr/bin/perl /etc/postfix/spf-policy.pl

Edit /etc/postfix/main.cf :

<code>check_policy_service unix:private/spfpolicy

smtpd_recipient_restrictions =
        reject_unauth_destination
        reject_unknown_recipient_domain
        reject_unverified_recipient
        check_policy_service unix:private/spfpolicy</code>

service postfix restart

Check /var/log/maillog for SPF output