Testing email signing and verification
For this example, an email can be sent from a Gmail account to a Fortinet account, and the email's Internet headers can show successful SPF and DKIM signing.
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Send a test email from your domain to a Gmail address.
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Once the email has been received, open the email in Gmail and click Show original.
- Among the various details, you can see that the email passed SPF, DKIM, and DMARC.
Below this summary, you can view the email's full text-readout of properties, including email headers and other diagnostic information. Among this information is the Authentication-Results, showing the specific SPF, DKIM, and DMARC results:
Authentication-Results: mx.google.com;
dkim=pass header.i=@fortinet.com header.s=dkim header.b=Lcxh1a5H;
spf=pass (google.com: domain of example@fortinet.com designates <ip-address> as permitted sender) smtp.mailfrom=example@fortinet.com;
dmarc=pass (p=QUARANTINE sp=NONE dis=NONE) header.from=fortinet.com