hdu.edu.vn

Valid Email Server
Domain Lookup › hdu.edu.vn

Domain Overview

DNS: ✓ 13d ago Checker: ✓ 13d ago
hdu.edu.vn
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-05-31 14:47:14 UTC · ↺ Refresh

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MX Hostnames

  • alt2.ASPMX.L.GOOGLE.com
  • sv.hdu.edu.vn
  • ASPMX.L.GOOGLE.com
  • aspmx3.googlemail.com
  • aspmx2.googlemail.com
  • ALT3.ASPMX.L.GOOGLE.com
  • alt1.ASPMX.L.GOOGLE.com
  • ALT4.ASPMX.L.GOOGLE.com
  • mail

MX Priorities

  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • sv.hdu.edu.vn: 10
  • mail: 50
  • alt1.aspmx.l.google.com: 5
  • aspmx3.googlemail.com: 10
  • alt3.aspmx.l.google.com: 10
  • aspmx2.googlemail.com: 10
  • alt4.aspmx.l.google.com: 10

A / AAAA Records

  • 59.153.245.210 (no PTR)

Mail Server IPs

  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 142.251.16.26 ↩ bl-in-f26.1e100.net
  • 2607:f8b0:4004:c1b::1b ↩ wv-in-f27.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)

SOA Record

Raw SOA ns1.vdconline.vn vdconline.tld 2026042881 28800 3600 120900 86400
Primary NS (mname)
ns1.vdconline.vn
Admin Email (rname)
vdconline@tld
Serial
2026042881
Refresh
28800s
Retry
3600s
Expire
120900s
Minimum TTL
86400s

Nameservers (NS)

ns2.vdconline.vn
ns1.vdconline.vn

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

4 records
  • SPFv=spf1 include:_spf.google.com ~all
  • google-site-verification=BMkqczWq2kNnJ24CqduwCy4y_7CkJpDpQXjllUpN-JA
  • _globalsign-domain-verification=jjtRA16XlzG_ETpfGpXLcFmWkb4Ud4j4PSXqi2A8bC
  • google-site-verification=DfZI02-2oHtmG7h80gGywT2MwXSYYu6K297xSuq5z5M
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