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