Is DKIM or SPF better?

Is it necessary to use both SPF and DKIM? While not mandatory, it’s highly recommended to use both SPF and DKIM to protect your email domains from spoofing attacks and fraud while also increasing your email deliverability.

Do I really need DKIM?

It’s an optional security protocol, and DKIM is not a universally adopted standard. Even though it’s not required, we recommend you add a DKIM record to your DNS whenever possible to authenticate mail from your domain.

Why do I need DMARC if I have SPF?

DMARC requires that the domain used by SPF aligns (either an exact match or subdomain) with the domain found in the visible “From” address of the email. DMARC ignores the nuances of soft fail and hard fail in your SPF configuration i.e. ~all and -all are treated equivalently as a SPF fail.

Does DKIM replace SPF?

In a nutshell, SPF allows email senders to define which IP addresses are allowed to send mail for a particular domain. DKIM on the other hand, provides an encryption key and digital signature that verifies that an email message was not forged or altered.

Why is SPF not recommended?

Attackers can spoof your domain name for phishing and whaling attacks, potentially leading to ransomware, malware, and financial loss or fraud. Other email servers on the internet may reject your email because they can’t determine its legitimacy.

Are SPF records needed?

Even if you have all the messages authorized according to DKIM, you still need an SPF record to identify the domain. Moreover, the Sender Policy Framework is required within cloud services and IPv6 networks. So, the best way to combat spoofing and secure your email is to implement SPF, DKIM, and DMARC.

Is SPF obsolete?

DNS record type of SPF (type 99) is deprecated and should not be used.

What is the difference between DKIM and SPF?

The owner of a domain can identify exactly which mail servers they are able to send from with SPF protocols. DKIM is a form of email authentication that allows an organization to claim responsibility for a message in a way that can be validated by the recipient.

Is it possible to deploy records for SPF and DKIM in DNS?

It is most useful for the correspondent to deploy records for SPF, DKIM and DMARC in their DNS, so that all authentication protocol deployments can be tested. Messages initiated with spf, dmarc

What is the DKIM header saved for later authentication?

The DKIM header is saved for later authentication. •With SPF and DKIM results in hand, the Milter gets the DMARC record, noting that SPF and DKIM domain restrictions (aspf, adkim) are not specified, and uses the defaults of aspf=relaxed, adkim=relaxed, and there are no subdomain restrictions.

What is DKIM and how does it work?

DKIM is a form of email authentication that allows an organization to claim responsibility for a message in a way that can be validated by the recipient. DKIM uses “public key cryptography” to verify that an email message was sent from an authorized mail server, in order to detect forgery and to prevent delivery of harmful email like spam.