Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nationalcore.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 15:03:28 UTC · ↺ Refresh
MX Hostnames
- nationalcore-org.mail.protection.outlook.com
MX Priorities
- nationalcore-org.mail.protection.outlook.com: 0
A / AAAA Records
- 208.109.200.25 ↩ 25.200.109.208.host.secureserver.net
Mail Server IPs
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
ns77.domaincontrol.com dns.jomax.net 2026031007 28800 7200 604800 600
Primary NS (mname)
ns77.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026031007
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns77.domaincontrol.com
ns78.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 a:email.nationalcore.org include:_spf.psm.knowbe4.com include:spf.protection.outlook.com include:emailus.freshservice.com include:spf.US.exclaimer.net include:asp-spf1.yardi.com include:asp-spf2.yardi.com Include:spfa.cpmails.com ip4:104.209.35.28 ip4:4.36.231.98 ip4:104.156.185.225 ip4:97.93.169.34 -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=25; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
⚠ Policy applies to 25% of failing messages only
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
16 records- docusign=5d18a120-3db5-4fde-81e2-1e1df0374a43
- SPFv=spf1 a:email.nationalcore.org include:_spf.psm.knowbe4.com include:spf.protection.outlook.com include:emailus.freshservice.com include:spf.US.exclaimer.net include:asp-spf1.yardi.com include:asp-spf2.yardi.com Include:spfa.cpmails.com ip4:104.209.35.28 ip4:4.36.231.98 ip4:104.156.185.225 ip4:97.93.169.34 -all
- google-site-verification=Cs2gue4crOEe7fSOK0uCgtjFXNQb4znwqyKJFbIFJtc
- docusign=c648287d-6c29-441a-9928-66e7f4e6d54b
- MS=ms33780644
- google-site-verification=QzuOz7XVuLXU5Mr-NMWD8vKc1dHxdTimKYHAg6dbFIU
- sophos-domain-verification=28647ed55d347571be77f722544d614dd9e5f0c6
- docusign=c090c23a-4bcb-463f-b7e9-2c0d92fcbd58
- 1ee826eb-4cbd-4842-ac1d-1cb1b56b525a
- TSDP3e+ZOCdtwrFKKHbuvMB6fUs4iSFalKkwNi7GXIO6ap1O2PncHhI3E5F5Ztx+N1Uwxc1tjhQFFBOXiq56yQ==
- apple-domain-verification=zwcdzCzjEBnX3o3j
- google-site-verification=RYJzjFwBwE9KrmprErPV40KGG5Hfz8d_QsMdOpauGjA
- MS=2D243CF6A75A9A34AD837CC73D444B9C316E047B
- smartsheet-site-validation=QqC7LmZQscjk6sxsr7y2i7pN2K4haG7B
- google-site-verification=IxoRP2XC2Ve4UeLkVyIfbmM8hBq5LVTyTbJJTS9euSE
- openai-domain-verification=dv-lGL4UGchRvwQywODPfOq6F5c
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