Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cornell.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 22:12:43 UTC · ↺ Refresh
MX Hostnames
- cornell-edu.mail.protection.outlook.com
MX Priorities
- cornell-edu.mail.protection.outlook.com: 0
A / AAAA Records
- 128.253.173.246 ↩ ad6.cornell.edu
- 128.253.173.245 ↩ ad5.cornell.edu
- 128.253.173.244
- 128.253.173.241
- 128.253.173.243
- 128.253.173.242
Mail Server IPs
- 52.101.41.183 ↩ mail-byapr04cu00307.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 52.101.41.0 ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
dns.cit.cornell.edu nsmaster.cornell.edu 3603291802 1860 600 2592000 3600
Primary NS (mname)
dns.cit.cornell.edu
Admin Email (rname)
nsmaster@cornell.edu
Serial
3603291802
Refresh
1860s
Retry
600s
Expire
2592000s
Minimum TTL
3600s
Nameservers (NS)
dns.cit.cornell.edu
cudns.cit.cornell.edu
bigred.cit.cornell.edu
drdns.cit.cornell.edu
drdns2.cit.cornell.edu
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:128.253.150.144/30 ip4:128.253.150.158 ip4:128.253.150.176 ip4:128.253.150.177 include:_spf.google.com include:spf.protection.outlook.com include:_spf.qualtrics.com ?all
📊 DNS lookups: 3/10
? Neutral (?all) — no enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]; aspf=r; adkim=s;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
11 records- autodesk-domain-verification=9Y0MrpeHy7LiqjUs0Rpy
- 7OT7JRZVY1IKZ8J8U84AK2JX4T0J2BM42TL8LSZLV
- sending_domain44232=26593424e3f9a029c8413a3f66844938dd909eec6d3c1421168e0fa974950b97
- NmwZsJfvHf2DUPwvPqMaLkflPi89l0leQfEkMtPmpxQNqlkPy0anm5LZM/N+sxrW+oJfdGKCyoi/qnhAhPy8yg==
- facebook-domain-verification=kiwj4xtbf69jsywfq4nlu7a0z81doz
- SPFv=spf1 ip4:128.253.150.144/30 ip4:128.253.150.158 ip4:128.253.150.176 ip4:128.253.150.177 include:_spf.google.com include:spf.protection.outlook.com include:_spf.qualtrics.com ?all
- google-site-verification=Gh3jhxuBIdlsH1dgfvJhSGS30sk0OFFvel_I9xQkI5c
- google-site-verification=CauHX8dfnPle2exSgs6k3OuJ_rPzkV1d6n6E9OFJFO8
- adobe-idp-site-verification=f41c9778dd61e0b903e5daff9095300a03eb9ad4a2a7ce435b4e4eaf76000127
- apple-domain-verification=R62yGBLwZW9fUKsm
- google-site-verification=V6u6xIMwPwKv6d55ZV4VqbkO1mjLlzyvQKkbz4usOM0
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