DomailfixEmail blacklist checker
Enter a domain or a mail server IP address. We check the domain's mail servers against well-known IP blacklists, and the domain itself against domain blacklists.
Questions and answers
I am listed. What now?
Find out why: open the list's page from the results. Fix the cause first (a hacked account, a bad list, a missing unsubscribe link), then request removal there. Most lists remove you for free.
Why could some lists not be checked?
Some lists, such as Spamhaus, refuse lookups from busy public DNS servers. Use the list's own page for those.
Does a clean list result mean I reach the inbox?
Not on its own. Inbox placement also depends on SPF, DKIM, DMARC, your sending habits and list quality. Verify your list with Domailfix before sending to keep bounces low.
More free tools
Email deliverability checkerCheck a domain's SPF, DKIM, DMARC and mail servers in one go, free.SPF checkerCheck your SPF record for errors, the 10 DNS lookup limit, duplicate records and unsafe settings like +all.DMARC checkerCheck your DMARC record and policy (none, quarantine or reject), report addresses and common mistakes.DKIM checkerFind a domain's DKIM keys under common selectors (Google, Microsoft 365, Zoho and more) or your own selector, and check the key strength.MX lookupSee which mail servers receive email for a domain, their IP addresses, reverse DNS and the email provider (Google Workspace, Microsoft 365, Zoho and more).