What happens if there is no SPF record?
If you fail SPF authentication, most ISPs will give you a poor reputation score and route your email to the spam or junk folder — some may even just block the email entirely.
This is a DNS TXT record that specifies what IPs and other systems are allowed to send an email on behalf of microsoft.com..
Is SPF deprecated?
More Information About Spf Record Deprecated The use of alternative DNS RR types that was formerly supported during the experimental phase of SPF was discontinued in 2014. SPF records must now only be published as a DNS TXT (type 16) Resource Record (RR) [RFC1035].
What is a valid SPF record?
An SPF record (Sender Policy Framework record) is the core of an SPF implementation in which the SPF policy is defined. An SPF record is published in the DNS (Domain Name Service) and it contains a list of authorized email servers which can send email on behalf of your domain name.
Are multiple SPF records allowed?
Another commonly violated aspect of SPF is that a domain may only have a single SPF record. That means you can only have a single DNS TXT record that begins with “v=spf1”. Having multiple records by definition of the RFCs should result in a permanent error.