Is defence.gov.au a valid email domain?
defence.gov.au can receive email. It publishes 2 mail servers, and the first choice is nactmail.defence.gov.au.
It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.
SPF is published and ends with -all. DMARC is set to reject.
Check an email address at defence.gov.au
Type the name before the @ to check a full address. No account needed.
MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | nactmail.defence.gov.au | 203.6.76.1 |
| 10 | actmail.defence.gov.au | 203.6.68.1 |
SPF
Record published
v=spf1 ip4:203.6.68.1 ip4:203.6.69.66 ip4:203.6.76.1 ip4:203.6.77.66 a:actmail.defence.gov.au a:nactmail.defence.gov.au include:spf.protection.outlook.com -all
DMARC
Policy: reject
v=DMARC1; p=reject; rua=mailto:dmarc.failures@defence.gov.au; ruf=mailto:dmarc.failures@defence.gov.au
Disposable?
No, not on our disposable list.
Free provider?
No, not a known free provider.
What this means for your email list
What this means for addresses at this domain
The domain accepts mail, but whether a given person's mailbox exists depends on that organisation. Company domains often have staff who left, role mailboxes like info@ and sales@, and sometimes catch-all rules that accept everything. Verify the individual address before you send.
Sender authentication
defence.gov.au has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as defence.gov.au must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is defence.gov.au a valid email domain?
- Yes. defence.gov.au publishes 2 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is defence.gov.au a disposable email domain?
- No. defence.gov.au is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for defence.gov.au?
- nactmail.defence.gov.au (priority 10); actmail.defence.gov.au (priority 10).
- Does defence.gov.au have SPF and DMARC?
- SPF: yes, ending -all. DMARC: yes, policy reject.