jcsboe.org

Valid Email Server
Domain Lookup › jcsboe.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
jcsboe.org
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-29 19:07:53 UTC · ↺ Refresh

MX Hostnames

  • ALT1.ASPMX.L.GOOGLE.COM
  • ALT2.ASPMX.L.GOOGLE.COM
  • ASPMX2.GOOGLEMAIL.COM
  • ASPMX3.GOOGLEMAIL.COM
  • ASPMX.L.GOOGLE.COM

MX Priorities

  • alt2.aspmx.l.google.com: 20
  • aspmx2.googlemail.com: 30
  • aspmx3.googlemail.com: 30
  • alt1.aspmx.l.google.com: 20
  • aspmx.l.google.com: 10

A / AAAA Records

  • 52.206.191.232 ↩ ec2-52-206-191-232.compute-1.amazonaws.com
  • 104.17.71.73

Mail Server IPs

  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 172.253.62.26 ↩ bc-in-f26.1e100.net
  • 2607:f8b0:4004:c08::1a ↩ bi-in-f26.1e100.net

SOA Record

Raw SOA asnsvr.asc.edu phduggan.asnmail.asc.edu 2025121000 3600 300 604800 28800
Primary NS (mname)
asnsvr.asc.edu
Admin Email (rname)
phduggan@asnmail.asc.edu
Serial
2025121000
Refresh
3600s
Retry
300s
Expire
604800s
Minimum TTL
28800s

Nameservers (NS)

ns3.asc.edu
asnsvr2.asc.edu
ns1.asc.edu
asnsvr.asc.edu
ns2.asc.edu

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:207.157.9.2 include:_spf.google.com include:mailgun.org ~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

✓ 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

7 records
  • SPFv=spf1 ip4:207.157.9.2 include:_spf.google.com include:mailgun.org ~all
  • adobe-idp-site-verification=dcc6450fe0fe2a2a4e4eea492752cae33ec53d138aec74123a7d9d5e5b94b61e
  • apple-domain-verification=j3tkM4IZj5zqZ9Xs
  • amazon-business-verification=5fd91904d82c5f35d7cdc0921a013d8b28ec9e8f8b2a4c637d8cd8206e5ac01f
  • duo_sso_verification=3Ntp67meVXXEAe18y3Ki8uOh3yacxYyp2cQU9ow2JkYX6b5xMZ5jvMjd3B9VCglG
  • openai-domain-verification=dv-Cy8hTMxyuRW0b7aBp9xAwKP5
  • MS=6F2AB71B62DDCAAE8CB6CAAFF4374C7E48DD0038
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