Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
horizoncs.com.au
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 22:45:28 UTC · ↺ Refresh
MX Hostnames
- horizoncs-com-au.mail.protection.outlook.com
MX Priorities
- horizoncs-com-au.mail.protection.outlook.com: 0
A / AAAA Records
- 43.250.140.21 ↩ syn231.syd4.hostyourservices.net
Mail Server IPs
- 52.101.151.0 ↩ mail-meupr01cu00200.inbound.protection.outlook.com
- 52.101.151.5 ↩ mail-meupr01cu00305.inbound.protection.outlook.com
- 52.101.149.1 ↩ mail-sy8pr01cu00101.inbound.protection.outlook.com
- 52.101.149.9 ↩ mail-sy2pr01cu00501.inbound.protection.outlook.com
- 2a01:111:f403:cc31::2 ↩ mail-sy5pr01cu00902.inbound.protection.outlook.com
- 2a01:111:f403:cc31:: ↩ mail-sy2pr01cu00300.inbound.protection.outlook.com
- 2a01:111:f403:cc31::1 ↩ mail-sy8pr01cu00101.inbound.protection.outlook.com
- 2a01:111:f403:cc33:: ↩ mail-meupr01cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns10.dnsmadeeasy.com dns.dnsmadeeasy.com 2009010185 43200 3600 1209600 180
Primary NS (mname)
ns10.dnsmadeeasy.com
Admin Email (rname)
dns@dnsmadeeasy.com
Serial
2009010185
Refresh
43200s
Retry
3600s
Expire
1209600s
Minimum TTL
180s
Nameservers (NS)
ns13.kptech.com.au
ns10.kptech.com.au
ns12.kptech.com.au
ns11.kptech.com.au
ns15.kptech.com.au
ns14.kptech.com.au
SPF Record
✓ Strict (-all)
v=spf1 ip4:43.250.140.21 ip4:137.22.227.19 ip4:137.22.225.98 ip4:137.22.228.37/32 ip4:137.22.228.47/32 include:spf.protection.outlook.com include:spf.mpmailmx.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; sp=none; fo=1; aspf=s; adkim=r; ri=86400
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 ip4:43.250.140.21 ip4:137.22.227.19 ip4:137.22.225.98 ip4:137.22.228.37/32 ip4:137.22.228.47/32 include:spf.protection.outlook.com include:spf.mpmailmx.com -all
- MS=ms49432847
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 horizoncs.com.au
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits