Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ckschools.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 06:00:41 UTC · ↺ Refresh
MX Hostnames
- ckschools-org.mail.protection.outlook.com
MX Priorities
- ckschools-org.mail.protection.outlook.com: 0
A / AAAA Records
- 54.221.139.169 ↩ ec2-54-221-139-169.compute-1.amazonaws.com
- 18.233.124.95 ↩ ec2-18-233-124-95.compute-1.amazonaws.com
Mail Server IPs
- 52.101.9.17 (no PTR)
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns39.domaincontrol.com dns.jomax.net 2025122227 28800 7200 604800 3600
Primary NS (mname)
ns39.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025122227
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns40.domaincontrol.com
ns39.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:168.99.128.7 ip4:52.247.204.27 ip4:155.254.144.0/20 ip4:75.78.0.0/16 ip4:158.106.69.84 ip4:158.106.81.212 include:_spf.google.com include:spf.protection.outlook.com include:customerspf.schoolmessenger.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=none; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 3 found
google._domainkey
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
10 records- google-site-verification=JnIuD8bITDdRH0FUnjGIgRBNPx4xTK2mNaG3VkFqQNU
- google-site-verification=VLZ29500v5Gz0bJKZQ09k1AqaTnzx6NB2nbtJU_iqgw
- google-site-verification=wesD_yJxOR1KzMXC-Er6lBdTcGEzAY8YPchIguZ1BFY
- SPFv=spf1 ip4:168.99.128.7 ip4:52.247.204.27 ip4:155.254.144.0/20 ip4:75.78.0.0/16 ip4:158.106.69.84 ip4:158.106.81.212 include:_spf.google.com include:spf.protection.outlook.com include:customerspf.schoolmessenger.com -all
- v=verifydomain MS=ms84424318
- citrix-verification-code=32d0cc03-c94c-44b6-a552-d29740189b68
- google-site-verification=-aGGgwBd6fHrdsbtmTCI445aj8KZ1AfaV4k6mfb_JUY
- adobe-idp-site-verification=0df7d3b1803b54ab328e77385ed8e7cac03f18a28e273914badc052135586110
- apple-domain-verification=ZHJRXwCVfCGcMMHE
- _dashlane-challenge=674f9469708e68b5b8ce19d9092270be810d5b7d203fd50fc14b687cf66abe08
Full email verification for ckschools.org
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