SPF Policy Server for Postfix (Python implementation)
Description
pypolicyd-spf (spf-engine) is a Postfix policy engine for Sender Policy
Framework (SPF) checking. It is implemented in pure Python and uses the
python-spf (pyspf) module.
This SPF policy server implementation provides flexible options for different
receiver policies and sender whitelisting to enable it to support a very wide
range of requirements.