Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sibt.nsw.edu.au
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 23:40:19 UTC · ↺ Refresh
MX Hostnames
- sibt-nsw-edu-au.mail.protection.outlook.com
MX Priorities
- sibt-nsw-edu-au.mail.protection.outlook.com: 0
A / AAAA Records
- 3.168.102.102 ↩ server-3-168-102-102.jfk52.r.cloudfront.net
- 3.168.102.2 ↩ server-3-168-102-2.jfk52.r.cloudfront.net
- 3.168.102.40 ↩ server-3-168-102-40.jfk52.r.cloudfront.net
- 3.168.102.10 ↩ server-3-168-102-10.jfk52.r.cloudfront.net
Mail Server IPs
- 52.101.124.117 ↩ mail-tydpr03cu00105.inbound.protection.outlook.com
- 52.101.157.80 ↩ mail-os8pr02cu00100.inbound.protection.outlook.com
- 52.101.137.0 ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 2a01:111:f403:cc1a::8 ↩ mail-tydpr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:cc09:: ↩ mail-sg2pr03cu00500.inbound.protection.outlook.com
- 2a01:111:f403:cc1f::4 ↩ mail-os8pr02cu00104.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-700.awsdns-23.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-700.awsdns-23.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-700.awsdns-23.net
ns-1426.awsdns-50.org
ns-1545.awsdns-01.co.uk
ns-365.awsdns-45.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:mktomail.com redirect=_sx78f1b8f.sdmarc.net
📊 DNS lookups: 2/10
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- adobe-idp-site-verification=0df4ffc9994a8be43a98ec37a8f6c6cb7630b1bf3127e0f539752893c83bf00e
- atlassian-domain-verification=eauoBEKAQL-AtY5OvNmTAkTeyZmJa5x/O23k8IESpl07GeAoVLvr80YZMvBixcQf
- knowbe4-site-verification=1b70e4fed96142f6dbdbf51351f6e0fa
- ms=ms48962935
- SPFv=spf1 include:mktomail.com redirect=_sx78f1b8f.sdmarc.net
- ZOOM_verify_b-YHqnNNRROnXqrWMwbiaA
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for sibt.nsw.edu.au
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits