So the SPF record contains information about the mail servers authorized to use your email address and is used to verify the origin of messages. The record is easily configurable through DNS: it will be possible to include all the IPs authorized to send messages from your domain. In our case an SPF record will look like this: v=spf1 ip4:185.31.67.1/24 all With the all option the message sent even from an unauthorized SMTP server can be accepted, while with -all the message must be rejected. Using the “all” option can be useful for ensuring greater security in email management but care must be taken not to impose excessive restrictions on legitimate senders.
How to choose the best hosting DKIM (DomainKeys Identified Mail) It is a technique that uses a digital signature to verify the authenticity of the sender currency data of an email. This digital signature is placed by the sender in the email message and verified by the recipient using the public key stored in the DNS record of the sender's domain. While it can't prevent someone from sending emails in your name , it can help you identify whether a message was actually sent from your provider's SMTP servers. To set up DKIM signing, you need to generate a cryptographic key pair.
The private key will be used to digitally sign emails sent from your domain, while the public key is included in your DNS record for recipient verification. This feature is always included in all our hosting services . DMARC (Domain-based Message Authentication, ) Finally, you can configure a set of rules, called DMARC, which allows you to identify and authenticate email addresses that send messages on behalf of your domain. With these policies, you can increase security by preventing malicious people from using your domain name for illicit purposes such as sending spam or phishing.