SPF Record:
A DNS TXT record, which lists all the servers permitted to send emails from a particular domain, is a Sender Policy Framework (SPF). Text (arbitrary text) lets a domain administrator enter the Domain Name System (DNS). Txt records were created for the purpose of including prior notices related to the domain, but they evolved to serve other purposes.
SPF records were created because of the Simple Mail Transfer Protocol (SMTP). SMTP does not inherently authenticate the ‘from’ address of an email. Without an SPF record or any other authenticated record, attackers or intruders can easily impersonate the sender of the email or share the information; otherwise,.
SPF records are DNS mechanisms that help email servers confirm whether an email comes from a trusted source. SPF records had a trusted and dedicated DNS record type. For dedicated and trusted records, only TXT records are used.
No SPF record:
A proper Sender Policy Framework record helps increase the chance people will receive your email. Without an SPF record, you have the maximum chance of getting your email marked as spam.
Checking the SPF record decreases the chance of reading or trusting the content in the received email.
While receiving, if you get a warning like don’t have SPF or no SPF record,
Record failing:
If the SPF record does not reference all the services that send emails to your domain, the mail or message from these senders will fail SPF, and the mail get rejected or marked as spam.
Example: A third-party organization or person who sends email instead of you for your organization. Third parties, like email marketing providers,.
SPF record not verified:
When the SPF record does not meet the necessary conditions to ensure that a trusted domain sends emails on your behalf, a validation error can occur.
Common SPF errors:
- Lookups of too many DNS:
This SPF error can occur when the number of DNS query mechanisms recorded exceeds the limit.
- Numerous SPF records:
Ensure that the record contains all the details and that you only have one domain per SPF record. Multiple records lead to a SPF record error.
- Type 99:
The specific type of SPF was deprecated in favor of using a TXT record of its type. Confirm that the DNS record is of the TXT type.
- IP address used:
The IP address used to validate your SPF record does not support the servers often. If you use the SPF compression tool without your address, it will not validate the SPF record.