Domain Overview
DNS: ✓ 23h ago
Checker: ✓ 23h ago
yu.ac.kr
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-05-20 14:29:19 UTC · ↺ Refresh
MX Hostnames
- ALT2.ASPMX.L.GOOGLE.COM
- ALT4.ASPMX.L.GOOGLE.COM
- ASPMX.L.GOOGLE.COM
- ALT3.ASPMX.L.GOOGLE.COM
- ALT1.ASPMX.L.GOOGLE.COM
MX Priorities
- alt3.aspmx.l.google.com: 10
- alt4.aspmx.l.google.com: 10
- aspmx.l.google.com: 1
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
A / AAAA Records
- 165.229.11.3
Mail Server IPs
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 172.253.62.27 ↩ bc-in-f27.1e100.net
- 2607:f8b0:4004:c23::1a ↩ yuiadrs-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
SOA Record
Raw SOA
ns.yu.ac.kr bskim.yu.ac.kr 2026051900 900 300 604800 900
Primary NS (mname)
ns.yu.ac.kr
Admin Email (rname)
bskim@yu.ac.kr
Serial
2026051900
Refresh
900s
Retry
300s
Expire
604800s
Minimum TTL
900s
Nameservers (NS)
ns.yu.ac.kr
ns3.yu.ac.kr
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:_spf.yu.ac.kr include:gwspf.ktbizoffice.com include:_spf_edms.yu.ac.kr include:email.ncloud.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; aspf=r; adkim=r; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 392 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
3 records- SPFv=spf1 include:_spf.google.com include:_spf.yu.ac.kr include:gwspf.ktbizoffice.com include:_spf_edms.yu.ac.kr include:email.ncloud.com ~all
- google-site-verification=vr6oKsEMqlkoN7WSeGShd1ESAs1BOsU1JMXX0scYmos
- autodesk-domain-verification=j8cPUeykXkFmfFsuCWE3
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