# spfquery > Query Sender Policy Framework records to validate e-mail senders. > More information: . - 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`