Install spf-milter-python by entering the following commands in the terminal:
sudo apt update sudo apt install spf-milter-python
Description:
RFC 4408 compliant SPF Milter for Sendmail and Postfix
A Python mail filter to add Received-SPF headers and reject forged mail. Rejection policy is configured via sendmail access file. Updated for RFC 4408 compliance.
Homepage: https://github.com/sdgathman/milter/
Version: 0.9-1
Section: universe/mail