https://spf-checker.org
https://datatracker.ietf.org/doc/html/rfc7208#section-4.6.4
https://mxtoolbox.com/spf.aspx
https://www.spf-record.com/spf-lookup
https://www.mimecast.com/products/dmarc-analyzer/spf-record-check/
1. whois
https://spf-checker.org
https://datatracker.ietf.org/doc/html/rfc7208#section-4.6.4
https://mxtoolbox.com/spf.aspx
https://www.spf-record.com/spf-lookup
https://www.mimecast.com/products/dmarc-analyzer/spf-record-check/
MoinQ: SPF/checker (last edited 2024-06-19 08:59:06 by ToshinoriMaeno)