Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
duke.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 01:50:48 UTC · ↺ Refresh
MX Hostnames
- duke-edu.mail.protection.outlook.com
MX Priorities
- duke-edu.mail.protection.outlook.com: 10
A / AAAA Records
- 152.3.70.87 ↩ www-duke-tel.oit.duke.edu
- 152.3.72.243 ↩ www-duke-fitz.oit.duke.edu
Mail Server IPs
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f902::1 ↩ mail-bl2pr02cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
dns-auth-01.oit.duke.edu datacom-hostmaster.duke.edu 755460729 1200 180 1209600 3600
Primary NS (mname)
dns-auth-01.oit.duke.edu
Admin Email (rname)
datacom-hostmaster@duke.edu
Serial
755460729
Refresh
1200s
Retry
180s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns-auth-01.oit.duke.edu
dns-nc1-01.oit.duke.edu
dns-auth-02.oit.duke.edu
SPF Record
✓ Soft Fail (~all)
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; adkim=r; aspf=r; rua=mailto:[email protected],mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
51 records- e2ma-verification=vsg
- e2ma-verification=0dhfb
- google-site-verification=VxNOqXRiTfBZEja2TbHMcwM3i0FcGUitTMxTa9CdXAg
- e2ma-verification=qqqfb
- google-site-verification=VTUhJp3AMqjMfqUIY6tdlBsNKZLr-E_D0oN0Z96EW_E
- e2ma-verification=khq
- yahoo-verification-key=m1mvmfsoVrobVlqVWZx2Cp3YBfQa4w4jqe7f1pXZsdg=
- e2ma-verification=ru6fb
- MS=ms29427067
- 1password-site-verification=Y3VALDXXNFEVBGZLI56XBT6MKY
- ciscocidomainverification=2d1dd96a4eb257ed827359fa052171ab2c46910868187a2bc9365f496904b651
- e2ma-verification=e8qeb
- d365mktkey=9UxytuxfXT7fQ5X2Wqo5UgHrC9MfXzESiUXsydjgVbkx
- e2ma-verification=984fb
- d365mktkey=DVSS3DGKRQNGACvj4bqW577P8t7hrVqGDWyDQzJFAtwx
- iContact1788229
- e2ma-verification=chxfb
- e2ma-verification=fbqeb
- atlassian-sending-domain-verification=3e62be3c-15a0-4c29-b220-9228dccda4d6
- atlassian-domain-verification=JNWA1j8qak7X8iJmucR4XqAsQOwMPSakfcNzpTn0Jc7b8aFxXcjK9cJay68Xqn9b
- google-site-verification=5TXsU4v41p3-uJbMWepQdYbg8ydDm7pZqZpyL43nBec
- asv=f0db2381d25189259bae9b4f5b96470a
- iContact1673295
- e2ma-verification=fu4
- e2ma-verification=sqqfb
- iContact1560489
- iContact1567195
- iContact1742283
- e2ma-verification=rhq
- facebook-domain-verification=z3gz759ai6md22t5oavjekfy06n11r
- airtable-verification=979478a7fc8cd2102187835add26f443
- VqIKTw/sDnE4e+9lXPalJqYaTtomECjG0+6XKvd2Nhfkaw8aAfgvcZjlAshHEjspbTHBtw4hhkk5X1ITTvdWxw==
- e2ma-verification=spmfb
- 88n3v2rofr6e5as8nu1tfnq6mg
- adobe-sign-verification=8c1cf31e238f6042bd9a6e8424ecd7af
- e2ma-verification=wc0fb
- e2ma-verification=jv3cb
- e2ma-verification=yq0fb
- airtable-verification=776ba9943f279be2814d0f5b7bf99b5c
- webexdomainverification.DW7A=3d54276f-7c3e-4b36-82cb-f9283bd66232
- 91TR4AEZ87EVJCSEOKTFQJ1KGWHDG7PQ4T52XL7YQ
- airtable-verification=7d15715bf3281d4f6ab41a64ff551dd6
- google-site-verification=WyhytImncSxgmBWxa1o1_nGcNS2LuzeYvzApLAE2qVA
- iContact1053803
- google-site-verification=Cx538Bo1iba_0Qw1ca-yfo2f0E50HuiB5AzF1oasBOc
- google-site-verification=fohuGSMCupMBfLvJ-OqvhaNOUrd4-VJzOA_hUjfM0GQ
- webexdomainverification.DW7B=b34c0222-460e-4621-bb5b-7ce6ee15ead2
- amazonses:kvjwShx2VuYQZKM31gjyJ9z5IWLmFmkF2BSfMHV5j2I=
- adobe-idp-site-verification=76438831-136f-42eb-8467-627bcd13bec6
- SPFv=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
- e2ma-verification=tqqfb
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