Tools
Email authentication check
Find out whether your domain is set up so the mail it sends is trusted, and what to fix if it is not.
What the three checks do
SPF lists the servers allowed to send mail for your domain. DKIM adds a signature that proves a message was not changed on the way. DMARC tells receivers what to do when a message fails both checks.
Large mailbox providers now expect all three from anyone who sends a lot of mail, and a missing or broken record is a common reason for messages landing in spam.
We can set up and review these records for your domain. Domains and DNS
We don't log the names you look up.