DNS looks good
At least two name servers answer from more than one network, and the SOA record is in order.
Free DNS check for a domain's name servers
Check a domain's name servers, SOA record and DNSSEC for the problems that stop its email.
- Free, with no signup
- Runs in your browser
What your result means
Works, with warnings
The domain resolves, but its name servers share one network, an SOA timer is unusual, or it has no MX records.
Has problems
A name server has no address, or the domain has no name servers or SOA record.
Questions about the DNS check
Why does a domain need two name servers?
If the only name server fails, the domain stops resolving, and email to and from it stops too. A second server on another network keeps it online.
What is an SOA record?
The start of authority record names the zone's primary name server and contact, and sets how often other servers refresh the zone.
Do I need DNSSEC for email?
No. DNSSEC protects DNS answers from forgery, and email works with or without it.
Found a problem? We will check the rest.
Book a deliverability audit and we will look at every domain and mailbox you send from.