SPF

This plugin checks a message against Sender Policy Framework (SPF) records published by the domain owners in DNS to fight email address forgery and make it easier to identify spams.

Tests

Area Test name Description Default scores
header SPF_PASS SPF: sender matches SPF record -0.001
header SPF_NEUTRAL SPF: sender does not match SPF record (neutral) 0 0.652 0 0.779
header SPF_FAIL SPF: sender does not match SPF record (fail) 0 0.919 0 0.001
header SPF_SOFTFAIL SPF: sender does not match SPF record (softfail) 0 0.972 0 0.665
header SPF_HELO_PASS SPF: HELO matches SPF record -0.001
header SPF_HELO_NEUTRAL SPF: HELO does not match SPF record (neutral) 0 0.001 0 0.112
header SPF_HELO_FAIL SPF: HELO does not match SPF record (fail) 0 0.001 0 0.001
header SPF_HELO_SOFTFAIL SPF: HELO does not match SPF record (softfail) 0 0.896 0 0.732