OnDMARC

SPF must be implemented on the sender's side and the recipient must be doing SPF validation on emails coming into their network.

Should SPF be implemented in both sender and receiver in order to avoid spoofing?

Demonstration of how to create an SPF record in DNS using Cloudflare which authorizes G Suite to send emails

How does SPF compare to DMARC and why is DMARC needed to stop domain phishing and spoofing?

How to look up SPF, DKIM and DMARC records using the command line and terminal.

What is the include statement found in an SPF record?

My email provider supports only SPF  and does not support DKIM, what should I do?

Suggestion on why SPF should be used along with DKIM to improve email deliverability.

Information on the +all mechanism in SPF, what it means and why it should not be used in your SPF records.

Information on the record type used by SPF and the old deprecated record type which should not be used.

Information on how SPF works, what identifier it uses for authentication and how to protect your domain from being spoofed.

I received an SPF PermError, what caused this? What are some of the causes for an invalid SPF record?

What is a ptr record, how does it work and why it should not be used as a mechanism in an SPF record?

Should I include more than one SPF record in my DNS for each service I use?

A hardfail indicates that an email isn't authorized and should be rejected, whereas a softfail suggests an email should be diverted to spam.

Information about SPF, what SPF does and how SPF works

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