spfquery

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

• 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 [email protected]

• Turn on debugging output:

spfquery -ip 8.8.8.8 -sender [email protected] --debug