The SPF aims to verify the identity of the domain name of the sender of an email, in order to minimize spoofing, pishing and spam.
To do so, we advise you to publish in your DNS the record specifying the IP addresses authorized to deliver emails.
Below is an example SPF record where the value is inserted between v=spf1 (beginning of spf field) and -all (end of spf field), the spf record is type. txt:
v=spf1 include:spfcloud.letsignit.com -all
Be careful, if no spf value exists for your domain, make sure that no other third-party service sends emails on your behalf before creating a spf to declare Letsignit.
For any further questions, do not hesitate to contact us via our online chat :)