there is fix on centos forum
my fix:
use python3
yum install python34
yum install python34-setuptools
easy_install-3.4 pip
pip3 install pyspf
pip3 install py3dns
pip3 install pypolicyd-spf
change python3 path in /etc/postfix/master.cf
e.g.
policyd-spf unix - n n - 0 spawn user=nobody argv=/usr/bin/python3 /usr/libexec/postfix/policyd-spf
I hope this will help someone out there.
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I didn't do this becouse I want to have my cwp compatible with master