Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
nao.ac.jp
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-21 07:20:30 UTC · ↺ Refresh
MX Hostnames
- nao-ac-jp.mail.protection.outlook.com
MX Priorities
No priority data.
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
ns3.mtk.nao.ac.jp
ns.mtk.nao.ac.jp
ns2.mtk.nao.ac.jp
SPF Record
✓ Strict (-all)
v=spf1 ip4:133.40.4.8 a:p.nao.ac.jp ip4:133.40.4.13 a:mta.nao.ac.jp a:mra.nao.ac.jp a:ml.nao.ac.jp a:mx-stitan2.nao.ac.jp a:mta3.nao.ac.jp a:mra3.nao.ac.jp include:spf.protection.outlook.com include:spf.haihaimail.jp -all
📊 DNS lookups: 10/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; ri=604800; aspf=s; adkim=s; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
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
1 record- SPFv=spf1 ip4:133.40.4.8 a:p.nao.ac.jp ip4:133.40.4.13 a:mta.nao.ac.jp a:mra.nao.ac.jp a:ml.nao.ac.jp a:mx-stitan2.nao.ac.jp a:mta3.nao.ac.jp a:mra3.nao.ac.jp include:spf.protection.outlook.com include:spf.haihaimail.jp -all
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