Check SPF Records when receiving mail in postfix
This simple install assumes you already have policyd installed
apt-get install postfix-policyd-spf-perl
Another tutorial, said that an executable file might be installed at /usr/sbin/policyd-spf, however it was installed elsewhere on my ubuntu 14.04 system, here is how I found it
User the path to add this entry to your /etc/postfix/master.cfm
policy-spf unix - n n - - spawn
So, now we need to update /etc/postfix/main.cf by adding the following line
spf-policyd_time_limit = 3600s
and updateing the ‘smtpd_receiptient_restrictions’ to have the following in the list of services, I added mind after ‘permit_mynetworks’ and another ‘check_policy_service 127.0.0.1:10011’ entry I have.
smtpd_recipient_restrictions = permit_mynetworks, check_policy_service inet:127.0.0.1:10011, check_policy_service unix:private/policy-spf, .....
Reload and watch your logs
/etc/init.d/postfix restart grep spf /var/log/mail.log