spfquery

Query Sender Policy Framework records to validate e-mail senders. More information: https://www.libspf2.org/.

• Check if an IP address is allowed to send an e-mail from the specified e-mail address:

spfquery -ip {{8.8.8.8}} -sender {{sender@example.com}}

• Turn on debugging output:

spfquery -ip {{8.8.8.8}} -sender {{sender@example.com}} --debug