Domain Intelligence
Last Updated:
Outlook.com.au
Safe to Send
Outlook.com.au is operated by Microsoft Corporation. The domain runs 1 mail exchange and SMTP is responsive, with all three authentication standards in force.
Safe to Send
RISK
21
/100
Low
Verify Mailbox
Verify @outlook.com.au emails
Live SMTP handshake against outlook.com.au mail servers. No email is sent. 10 free per day, no signup.
Trusted by 400,000+ senders
4.9/5
From 8,500+ verified reviews
Ran our entire 47k cold outbound list through this before our Q1 push. Bounce rate dropped from 9.4% to 0.8%. The SMTP-level catch on outdated B2B contacts is what set this apart from the other verifiers I tried. Andrew Mitchell · Sr. Demand Gen Manager
SOC 2 Type II
GDPR
CCPA
99.7% Accuracy
Disposable
No
Persistent addresses, not throwaway
SMTP Live
Yes
Mail server responds to SMTP handshake
MX Records
1
Mail exchangers
Mail Exchange (MX) Records for outlook.com.au Mail Exchange records. They tell other mail servers which hosts are responsible for receiving email at this domain, in priority order. Lower priority numbers are tried first.
#10
apc.olc.protection.outlook.com 52.101.41.57
Reachable
SMTP Handshake
Simple Mail Transfer Protocol. We open a live SMTP connection to the primary MX and read the greeting banner. A response confirms the mail server is alive and accepting connections.
Responsive
BANNER220 BL6PEPF0001AB73.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Sat, 9 May 2026 11:10:21 +0000 [08DEAD756F873B97]
Primary mail server accepted SMTP connection and returned a banner during the live audit.
outlook.com.au Email Authentication SPF · DKIM · DMARC
SPF
Sender Policy Framework. A DNS record listing which servers are allowed to send mail for this domain. Receivers reject or flag mail from unauthorized servers.
Pass
TXTv=spf1 include:spf2.outlook.com ~all
Authorized senders are defined and pass SPF policy.
DKIM
DomainKeys Identified Mail. The sending server cryptographically signs outbound mail with a private key, and receivers verify the signature using a public key in DNS.
Pass
SELECTORDetected via standard selectors
A DKIM signature was detected. Outbound mail from this domain can be cryptographically verified.
DMARC
Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject.
None
TXTv=DMARC1; p=none; rua=mailto:rua@dmarc.microsoft;ruf=mailto:ruf@dmarc.microsoft;fo=1:s:d
Monitoring only. Receivers take no action when SPF or DKIM fails.
outlook.com.au Domain Registration WHOIS · Nameservers · Registrar
RegistrarMarkMonitor Corporate Services Inc
IANA ID292
Last UpdatedOctober 2, 2025
TLD.au
Authoritative Nameservers (4)
- ns1-02.azure-dns.com
- ns2-02.azure-dns.net
- ns3-02.azure-dns.org
- ns4-02.azure-dns.info
Registrant
Domain Administrator
MICROSOFT PTY LTD
Technical Contact
MSN Hostmaster
About this Domain
About outlook.com.au
outlook.com.au is the Australian variant of Microsoft's Outlook.com. This domain serves Australian users with localized Outlook email. All accounts operate through Microsoft's Exchange Online infrastructure.
outlook.com.au uses Microsoft's comprehensive authentication with SPF, DKIM, and DMARC. Exchange Online Protection provides consistent security.
The outlook.com.au mail servers enforce recipient verification and reject invalid addresses. The domain does not operate as catch-all.
Delivering to outlook.com.au follows Microsoft's sender requirements. Authenticate fully. Comply with Australia's Spam Act 2003 for commercial messages.
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Common Questions About outlook.com.au
Is outlook.com.au a disposable or temporary email provider?
No. outlook.com.au is not a disposable email provider. It is classified as Free Email Provider operated by Microsoft Corporation and addresses on outlook.com.au are persistent rather than throwaway. Mail sent to a valid outlook.com.au mailbox reaches a real recipient.
How do I verify if a outlook.com.au email address is valid?
The fastest way to verify a outlook.com.au email address is to use our free email checker. Enter any @outlook.com.au mailbox at the top of this page and our system performs a real-time SMTP handshake against outlook.com.au's mail servers, confirming whether the mailbox exists, is reachable, and is safe to send to. No email is ever delivered during the check.
Can I check if a outlook.com.au email exists without sending a message?
Yes. Our real-time email verification API connects directly to outlook.com.au's mail server, opens an SMTP session, and queries the mailbox using the RCPT TO command without ever transmitting an actual email. The server's response confirms whether the outlook.com.au mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for outlook.com.au?
outlook.com.au currently publishes 1 mail exchange (MX) record. The primary MX is apc.olc.protection.outlook.com, which is the first server contacted when other mail systems try to deliver email to a outlook.com.au address. The full list with priorities and IP addresses is in the MX Records panel above. MX records tell sending servers where to route email for outlook.com.au.
Does outlook.com.au use SPF, DKIM, and DMARC email authentication?
outlook.com.au enforces all three email authentication standards: SPF, DKIM, and DMARC (policy: none). This is the gold-standard configuration. It means receivers can verify that mail claiming to come from @outlook.com.au is genuine, and outlook.com.au's DMARC policy of 'none' instructs receivers how to handle messages that fail those checks.
Why do emails to outlook.com.au bounce or get blocked?
Bounces from outlook.com.au usually fall into three buckets: the mailbox doesn't exist (5xx user unknown), the inbox is full, or your sending domain isn't authenticated to outlook.com.au's satisfaction. The fastest fix is to run each address through a free email verifier before you send, and to make sure your own SPF, DKIM, and DMARC are configured correctly so outlook.com.au's receivers trust you.
How can I verify a large list of outlook.com.au email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of outlook.com.au addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, outlook.com.au catch-all detection, role-account detection, and disposable-domain matching. Results typically come back within minutes and previously-failed addresses on your blacklist are reprocessed for free. For continuous high-volume needs, see our unlimited email verification API.
Is it safe to accept signups from outlook.com.au email addresses?
Yes, with normal hygiene. outlook.com.au is a legitimate email service and signups from @outlook.com.au behave like any other real user. Pipe each address through a real-time email verifier API at the moment of signup to catch typos and dead mailboxes, but there is no need to block outlook.com.au by default.
What email format does outlook.com.au use for usernames?
Most outlook.com.au mailboxes follow common patterns like first.last@outlook.com.au, firstinitiallast@outlook.com.au, or first@outlook.com.au, but the actual local-part rules depend on Microsoft Corporation. The only reliable way to confirm whether a specific @outlook.com.au address exists is to run it through a free email verification tool. Guessing patterns will produce a high bounce rate and damage your sender reputation.
How is the outlook.com.au risk score calculated?
The 0-to-100 risk score for outlook.com.au combines disposable-domain classification, mail-server reachability, MX record presence and depth, SPF / DKIM / DMARC enforcement, DMARC policy strength, SMTP banner response, and domain age. Lower scores mean safer to send to. Disposable domains are pinned at the high end of the scale. The outlook.com.au score is recomputed on every audit so it always reflects the live state of the domain.
Is outlook.com.au a valid email domain?
Yes, outlook.com.au is a valid free email domain operated by Microsoft Corporation. It provides permanent email accounts to users.
Is outlook.com.au a disposable or temporary email provider?
No, outlook.com.au is not a disposable or temporary email provider. It offers permanent email accounts with standard email features.
What mail server does outlook.com.au use?
outlook.com.au uses mail servers operated by Microsoft Corporation. Check the MX records section above for specific server details.
Can I send marketing emails to outlook.com.au addresses?
Yes, with proper opt-in consent. Follow email best practices and ensure SPF, DKIM, and DMARC authentication is configured for your sending domain.
How do I verify an email address at outlook.com.au?
Use BulkEmailChecker to verify outlook.com.au addresses via SMTP checks. Verification behavior varies by provider. Our tool handles provider-specific rate limiting automatically.