Learn about SPF

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

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

Written by Ivan Kovachev
Updated this week

How to create an SPF record in DNS using Cloudflare?

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

Written by Ivan Kovachev
Updated this week

I have SPF, do I really need DMARC to protect my domain? What does DMARC do that SPF does not?

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

Written by Ivan Kovachev
Updated this week

SPF record troubleshooting and top tips

SPF record troubleshooting and top tips

Written by Ivan Kovachev
Updated this week

What is SPF?

What is SPF or Sender Policy Framework?

Written by Ivan Kovachev
Updated this week

Looking up SPF, DKIM and DMARC records in DNS

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

Written by Ivan Kovachev
Updated this week

What is an include in SPF?

What is the include statement found in an SPF record?

Written by Ivan Kovachev
Updated this week

Most common SPF includes used by well known email providers.

List of SPF includes used by 12 common email sending services and the number of DNS lookups each will use.

Written by Ivan Kovachev
Updated this week

What if my email provider doesn't support DKIM?

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

Written by Ivan Kovachev
Updated this week

Can I use only SPF and DMARC, without DKIM?

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

Written by Ivan Kovachev
Updated this week

What is the +all mechanism in SPF and should I use it?

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

Written by Ivan Kovachev
Updated this week

Which DNS record type is used by SPF?

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

Written by Ivan Kovachev
Updated this week

Does SPF protect my domain from spoofing?

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

Written by Ivan Kovachev
Updated this week

Invalid SPF record mechanism

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

Written by Ivan Kovachev
Updated this week

PTR mechanism in an 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?

Written by Ivan Kovachev
Updated this week

Multiple SPF records

Should I include multiple SPF records in DNS for each service I use?

Written by Ivan Kovachev
Updated this week

SPF DNS Lookup Limit

SPF PermError: Too Many DNS Lookups

Written by Ivan Kovachev
Updated this week

SPF Hard Fail vs SPF Soft Fail

What is SPF hard fail and SPF soft fail? Here are some examples that illustrate the difference between SPF hard fail and soft fail.

Written by Ivan Kovachev
Updated this week