Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tepper.cmu.edu
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 09:21:52 UTC · ↺ Refresh
MX Hostnames
- ALT1.ASPMX.L.GOOGLE.COM
- ASPMX4.GOOGLEMAIL.COM
- ASPMX5.GOOGLEMAIL.COM
- ALT2.ASPMX.L.GOOGLE.COM
- ASPMX.L.GOOGLE.COM
- ASPMX2.GOOGLEMAIL.COM
- ASPMX3.GOOGLEMAIL.COM
MX Priorities
- aspmx2.googlemail.com: 30
- alt1.aspmx.l.google.com: 20
- aspmx5.googlemail.com: 30
- aspmx4.googlemail.com: 30
- aspmx3.googlemail.com: 30
- aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 20
A / AAAA Records
- 128.2.24.117 ↩ TPR-PRD-WEB07.TEPPER.CMU.EDU
Mail Server IPs
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-x1b.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
SOA Record
Raw SOA
nsauth-master.net.cmu.edu host-master.andrew.cmu.edu 407825 900 450 3600000 21600
Primary NS (mname)
nsauth-master.net.cmu.edu
Admin Email (rname)
host-master@andrew.cmu.edu
Serial
407825
Refresh
900s
Retry
450s
Expire
3600000s
Minimum TTL
21600s
Nameservers (NS)
nsauth1.net.cmu.edu
nsauth2.net.cmu.edu
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:_spf.qualtrics.com ~all
📊 DNS lookups: 2/10
~ 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
✓ 1 found
google._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
4 records- pardot927333=0b899b0320acfa19a4ced58e257012235f9667a026b101651f52179858b2c03c
- [NRDR 34199_IN_TXT_pardot927333=0b899b0320acfa19a4ced58e257012235f9667a026b101651f52179858b2c03c NWVNJFGbb97Dwc12j+5LUQ]
- SPFv=spf1 include:_spf.google.com include:_spf.qualtrics.com ~all
- [NRDR 34958_IN_TXT_v=spf1.include:_spf.google.com.include:_spf.qualtrics.com.~all NpeHyn09zvpPfS1ySiRtkw]
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