i) SPF
--> SPF stands for Sender Policy Framework.
--> SPF checks the list of IP Addresses in DNS record that are allowed to send email for a particular domain.
--> If SPF is enabled on Fortimail then it compares the Sender IP Address to the list of IP Addresses of the authorized servers in DNS record.
--> If the Sender IP Address does not match with Authorized IP Address in DNS record then Fortimail treats email as spam email.
ii) DKIM
--> DKIM stands for Domain Keys Identified Mail.
--> DKIM checks whether the email content sent by the user is modified or not.
--> DKIM uses Public/Private DKIP keys used in the DNS records for this process.
--> Sender sends the e-mail with the signature which is generated by using DKIM private key. When Fortimail receives this e-mail then it checks for DKIM public key in DNS records, which is used to validate the e-mail.
--> If any changes made to the email content then signature verification fails and email is treated as spam.
iii) DMARC
--> DMARC stands for Domain-based Message Authentication, Reporting, and Conformance.
--> DMARC checks both the features of SPF and DKIM.
--> SPF stands for Sender Policy Framework.
--> SPF checks the list of IP Addresses in DNS record that are allowed to send email for a particular domain.
--> If SPF is enabled on Fortimail then it compares the Sender IP Address to the list of IP Addresses of the authorized servers in DNS record.
--> If the Sender IP Address does not match with Authorized IP Address in DNS record then Fortimail treats email as spam email.
ii) DKIM
--> DKIM stands for Domain Keys Identified Mail.
--> DKIM checks whether the email content sent by the user is modified or not.
--> DKIM uses Public/Private DKIP keys used in the DNS records for this process.
--> Sender sends the e-mail with the signature which is generated by using DKIM private key. When Fortimail receives this e-mail then it checks for DKIM public key in DNS records, which is used to validate the e-mail.
--> If any changes made to the email content then signature verification fails and email is treated as spam.
iii) DMARC
--> DMARC stands for Domain-based Message Authentication, Reporting, and Conformance.
--> DMARC checks both the features of SPF and DKIM.
--> DMARC Specifies how the email receiver should handle emails that fail SPF or DKIM checks.
--> Using DMARC we can combat email spoofing, phishing, and other types of email fraud by verifying that the sender is authorized to use the claimed domain.
MD.KAREEM
CCIE #54759
--> Using DMARC we can combat email spoofing, phishing, and other types of email fraud by verifying that the sender is authorized to use the claimed domain.
MD.KAREEM
CCIE #54759
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