alumni.cmu.edu

Valid Email Server
Domain Lookup › alumni.cmu.edu
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
alumni.cmu.edu
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-06-03 11:02:01 UTC · ↺ Refresh

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MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 128.2.42.69

Mail Server IPs

  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 173.194.76.27 ↩ ws-in-f27.1e100.net
  • 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 142.251.111.27 ↩ bk-in-f27.1e100.net
  • 2607:f8b0:4004:c1b::1a ↩ wv-in-f26.1e100.net

SOA Record

Raw SOA nsauth-master.net.cmu.edu host-master.andrew.cmu.edu 199951 900 450 3600000 300
Primary NS (mname)
nsauth-master.net.cmu.edu
Admin Email (rname)
host-master@andrew.cmu.edu
Serial
199951
Refresh
900s
Retry
450s
Expire
3600000s
Minimum TTL
300s

Nameservers (NS)

nsauth1.net.cmu.edu
nsauth2.net.cmu.edu

SPF Record

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

DMARC Record

✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

7 records
  • [NRDR 33731_IN_MX_10.ALT3.ASPMX.L.GOOGLE.COM. mrCNQnjOR8FcwJfzshqa4Q]
  • [NRDR 33729_IN_MX_5.ALT1.ASPMX.L.GOOGLE.COM. 89LN9+pnLy28lsYu1EK0vw]
  • [NRDR 33732_IN_MX_10.ALT4.ASPMX.L.GOOGLE.COM. 67Etpt4iY4iDkIKOLbY2eg]
  • [NRDR 32307_IN_TXT_v=spf1.include:_spf.cmu.edu.~all nVsbqCV8mC7LDLdycGTFrA]
  • SPFv=spf1 include:_spf.cmu.edu ~all
  • [NRDR 33728_IN_MX_1.ASPMX.L.GOOGLE.COM. oIXY1gpLb7UA353S6pxU6Q]
  • [NRDR 33730_IN_MX_5.ALT2.ASPMX.L.GOOGLE.COM. 3ZvMYbj369cB9PtuEksplg]
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