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spfquery: add page (#4030)

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Pierre Rudloff 2020-05-09 04:24:20 +02:00 • committed by GitHub
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# 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`