I switched to the distro-pkgs case, execing with python2. I switched to debugLevel = 5 On send/receive of a testmail from gmail, (1) with Header_Type=SPF, the rcvd mail has this in its headers, what I expected Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=209.85.220.67; helo=mail-pa0-f67.google.com;