cs.cmu.edu

Valid Email Server
Domain Lookup › cs.cmu.edu

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cs.cmu.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 01:05:37 UTC · ↺ Refresh

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MX Hostnames

  • scs-mx-03.andrew.cmu.edu
  • scs-mx-02.andrew.cmu.edu
  • scs-mx-04.andrew.cmu.edu
  • scs-mx-01.andrew.cmu.edu

MX Priorities

  • scs-mx-03.andrew.cmu.edu: 10
  • scs-mx-02.andrew.cmu.edu: 10
  • scs-mx-01.andrew.cmu.edu: 10
  • scs-mx-04.andrew.cmu.edu: 10

A / AAAA Records

  • 128.2.42.95 ↩ SCS-WEB-LB.ANDREW.CMU.EDU

Mail Server IPs

  • 128.2.157.77 ↩ SCS-MX-03.ANDREW.CMU.EDU
  • 128.2.158.89 ↩ SCS-MX-02.ANDREW.CMU.EDU
  • 128.2.158.88 ↩ SCS-MX-01.ANDREW.CMU.EDU
  • 128.2.157.80 ↩ SCS-MX-04.ANDREW.CMU.EDU

SOA Record

Raw SOA blox-dhcp.net.local.cmu.edu host-master.andrew.cmu.edu 2017109415 10800 3600 2419200 900
Primary NS (mname)
blox-dhcp.net.local.cmu.edu
Admin Email (rname)
host-master@andrew.cmu.edu
Serial
2017109415
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
900s

Nameservers (NS)

nsauth-ib2.net.cmu.edu
nsauth-ib1.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

4 records
  • SPFv=spf1 include:_spf.cmu.edu ~all
  • MS=D604B710886A90B9028BE43267C0CC5A8BD5A228
  • rkH8vbn4EvRWmxLN/Yyxc3LXFNY+14GZvOTLhnoW8s9suf1ABPdyHhnycdHWHwpvLAEEK0/P9BeQFkK3B8AF8A==
  • cisco-ci-domain-verification=60e37a5c7d18673f21c7d53e1e34f4dd6bf2d2568150893b452ee748178e2049
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