blackduck.k12.mn.us

Valid Email Server
Domain Lookup › blackduck.k12.mn.us

Domain Overview

DNS: ✓ 1h ago Checker: ✓ 1h ago
blackduck.k12.mn.us
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-06-03 07:55:34 UTC · ↺ Refresh

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MX Hostnames

  • alt1.aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • alt3.aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • aspmx.l.google.com

MX Priorities

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

A / AAAA Records

  • 199.34.228.77

Mail Server IPs

  • 172.253.122.27 ↩ bh-in-f27.1e100.net
  • 2607:f8b0:4004:c1b::1a ↩ wv-in-f26.1e100.net
  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 173.194.76.27 ↩ ws-in-f27.1e100.net
  • 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net

SOA Record

Raw SOA w2.paulbunyan.net cpanel.paulbunyan.net 2026060301 3600 1800 1209600 86400
Primary NS (mname)
w2.paulbunyan.net
Admin Email (rname)
cpanel@paulbunyan.net
Serial
2026060301
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

w2.paulbunyan.net
w3.paulbunyan.net

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:209.191.200.6 ip4:158.222.82.36 include:_spf.google.com include:customerspf.schoolmessenger.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 2 found
google._domainkey
default._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

7 records
  • adobe-idp-site-verification=134715a674ad570e3b83376f1f3f8ceb3a3ffc42e95c7dd88101cb4e42137665
  • google-site-verification=AENGQVwtIu5u_EUpfCJg_7L2VYXm0VrGAaM9Lm1cnuI
  • openai-domain-verification=dv-m9l43QP8ASjPS9NzLeFx8S40
  • apple-domain-verification=4oEKZDe021oRtH8x
  • google-site-verification=B59IYRpbwj7XGAOzQE30BO3SahN--xac6u4NfX7qPlg
  • SPFv=spf1 ip4:209.191.200.6 ip4:158.222.82.36 include:_spf.google.com include:customerspf.schoolmessenger.com ~all
  • MS=B39DFE8E78733E1C9BC9870F3EA3450B204660A8
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