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creighton.edu

Email infrastructure report · Last checked

Summary

creighton.edu uses Microsoft 365 for email and has SPF, DKIM, and DMARC configured. It is not catch-all.

Mail provider

ProviderMicrosoft 365 business
Primary MXcreighton-edu.mail.protection.outlook.com

MX records

PriorityHostnameIPs
100creighton-edu.mail.protection.outlook.com52.101.194.12, 52.101.42.14, 52.101.194.13, 52.101.50.1, 2a01:111:f403:f908::2, 2a01:111:f403:c91d::a, 2a01:111:f403:c91d::, 2a01:111:f403:c902::5

Authentication

SPF✓ Present ~all
DKIM✓ Found (selectors: selector1, selector2, k1, s1, s2)
DMARC✓ Present p=quarantine
Raw SPF record
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
Raw DMARC record
v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email; fo=1

Email behavior

Catch-all✗ No
Disposable✗ No
Free provider✗ No
STARTTLS✓ Supported
SMTP response385ms
SMTP banner220 CO1PEPF00012E62.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Tue, 28 Jul 2026 16:25:19 +0000 [08DEE83D4AAB256F]

What this means

This domain has strong email authentication. Messages claiming to come from @creighton.edu can be cryptographically verified by recipients, making spoofing difficult. Deliverability for legitimate mail should be good.

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curl https://api.checkmail.dev/v1/verify \
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  -H "Authorization: Bearer cm_live_..."