1. Enter the domain
Use the bare domain, such as yourbusiness.com.au. Email addresses and https links are cleaned automatically.
Free email DNS tool
Free MX Lookup & Email DNS Checker
Enter a domain to check MX, SPF, DKIM and DMARC in one plain-English report. No login. Built for Australian businesses sorting out business email DNS.
One MX lookup for the records that decide if mail arrives
People search for MX lookup, SPF checker, DKIM checker and DMARC checker when mail bounces, lands in spam, or a new domain will not receive anything. This tool runs those checks together and scores the result in plain English.
2. Read pass or fail
Each of MX, SPF, DKIM and DMARC gets a clear status, the published record where found, and a short explanation.
3. Fix with guides
Jump into our email help articles, or move the mailbox to business email hosting if you want us to host it.
MX lookup, SPF, DKIM and DMARC in one check
This free email DNS checker reviews the four records that decide whether mail reaches an inbox. Missing MX, SPF, DKIM or DMARC is a common reason Australian small-business email bounces, lands in spam, or never arrives.
Free MX lookup for any domain
An MX lookup shows which mail servers receive email for a domain, and in what priority order. If there is no MX record, the domain usually cannot accept mail at all. Use this check when you are pointing a new domain at business email, or confirming a migration completed.
We list each host and priority so you can compare what DNS publishes with what your provider expects. Need the basics first? Read what is an MX record.
Run an MX lookup
SPF checker for authorised senders
Our SPF checker looks for a single SPF TXT record, flags unsafe +all policies, and warns when the record is likely over the 10 DNS lookup limit. SPF tells receiving servers which hosts may send mail as your domain.
More than one SPF record, a missing all mechanism, or a bloated include chain are frequent causes of soft fails. See what is SPF for how the record should be structured.
Check SPF
DKIM checker for signed outbound mail
The DKIM checker looks up common selectors and any selector you enter. A published DKIM key lets Gmail, Microsoft 365 and other receivers verify that a message was signed by your domain and not altered in transit.
If nothing is found, enable signing in your mail host or paste the custom selector from cPanel, Google Workspace or Microsoft 365. Learn more in what is DKIM.
Check DKIM
DMARC checker for inbox policy
The DMARC checker reads _dmarc and explains whether policy is none, quarantine or reject. DMARC tells receivers what to do when SPF or DKIM fail alignment, and it is how you stop lookalike domains spoofing your brand.
Start at p=none while you review reports, then move to quarantine or reject once legitimate senders are covered. Full walkthrough: what is a DMARC record.
Check DMARC
Email help guides and next steps
Find the gap with the checker, then use the guide that matches. If you want email on your own domain without moving the website, start with business email hosting.
Set up a business email address
From domain to working inbox, including the DNS pieces this tool checks.
Read guide
Create email in cPanel
Step-by-step mailbox creation when the domain already points at HSJ Host.
Open help
Emails not coming through
What to check when DNS looks fine but messages still bounce or vanish.
Troubleshoot
Australian email hosting guide
How small businesses should host email in Australia without overbuying.
Read guide
Business email hosting
you@yourdomain from $4.35/month GST inclusive. Keep the website where it is.
View plans
Email signature generator
Once DNS and the inbox work, copy a clean signature into Gmail, Outlook or webmail.
Open toolMX lookup FAQ
Short answers on MX records, SPF, DKIM, DMARC and how this free checker fits business email setup.
What is an MX lookup?
An MX lookup shows the mail exchange records for a domain. Those records tell the internet which servers should receive email for addresses on that domain. This free MX lookup also checks SPF, DKIM and DMARC so you can see the full email DNS picture in one report.
What does a good email DNS setup include?
Why do my emails go to spam even with MX set?
MX only controls inbound delivery. Outbound trust depends heavily on SPF, DKIM and DMARC. If those are missing or wrong, Gmail, Microsoft 365 and other receivers may junk or reject mail. See why emails are not coming through for the usual causes.
Can I use this as an SPF, DKIM and DMARC checker?
Yes. Enter a domain once and the same report covers SPF checker, DKIM checker and DMARC checker results alongside the MX lookup. If DKIM uses a custom selector, type that selector in the optional field.
How do I fix email DNS for a domain hosted with HSJ Host?
Create the mailbox in cPanel, then confirm MX and authentication records match the mail host you are using. Start with how to create an email account in cPanel and how to set up a business email address. If you only need email, business email hosting starts at $4.35 per month GST inclusive.
Is this MX lookup free?
Yes. No account and no login. Checks are rate limited so the tool stays fast for everyone. Results are for troubleshooting your own domains and customers you support.
Get email on your own domain today
From $4.35 per month GST inclusive. Keep your website where it is, and let our Australian team set up the records.