ceub.edu.br

Valid Email Server
Domain Lookup › ceub.edu.br

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
ceub.edu.br
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-02 15:45:41 UTC · ↺ Refresh

MX Hostnames

  • ALT4.ASPMX.L.GOOGLE.COM
  • ALT1.ASPMX.L.GOOGLE.COM
  • ALT2.ASPMX.L.GOOGLE.COM
  • ALT3.ASPMX.L.GOOGLE.COM
  • ASPMX.L.GOOGLE.COM

MX Priorities

  • alt2.aspmx.l.google.com: 5
  • alt1.aspmx.l.google.com: 5
  • alt4.aspmx.l.google.com: 10
  • aspmx.l.google.com: 1
  • alt3.aspmx.l.google.com: 10

A / AAAA Records

  • 200.229.250.36

Mail Server IPs

  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 173.194.76.26 ↩ ws-in-f26.1e100.net
  • 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
  • 142.251.111.26 ↩ bk-in-f26.1e100.net
  • 2607:f8b0:4004:c19::1b ↩ bk-in-f27.1e100.net
  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net

SOA Record

Raw SOA s10.ceub.edu.br postmaster.ceub.edu.br 2405021927 3600 900 36000000 3600
Primary NS (mname)
s10.ceub.edu.br
Admin Email (rname)
postmaster@ceub.edu.br
Serial
2405021927
Refresh
3600s
Retry
900s
Expire
36000000s
Minimum TTL
3600s

Nameservers (NS)

asx.ceub.edu.br
d20.ceub.edu.br
s10.ceub.edu.br

SPF Record

✓ Strict (-all)
v=spf1 include:_spf.google.com ip4:200.186.62.208 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 1 found
google._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

5 records
  • workplace-domain-verification=cpSTXmEpBHEl3c9k0TFI630ugKnNwp
  • google-site-verification=zYDXZUJ1ojV0ka66MZoWVwxu_MVsbr-6naL5-XBJg9w
  • google-site-verification=Mbz1LmcVNJrHhxC4r7Jj_U-zwMGvTYs2OHll4p-rFq4
  • adobe-idp-site-verification=542cc65bff1bb79ee7fa07b53d5b5f23928f6654467dc21caf55156e7c55e1ee
  • SPFv=spf1 include:_spf.google.com ip4:200.186.62.208 -all
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