mbl.edu

Email infrastructure report · Last checked 30 Jul 2026, 00:30 UTC

Summary

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

Mail provider

ProviderMicrosoft 365 business

Primary MXmbl-edu.mail.protection.outlook.com

MX records

Priority	Hostname	IPs
10	mbl-edu.mail.protection.outlook.com	52.101.40.0, 40.93.192.1, 52.101.11.2, 52.101.10.2, 2a01:111:f403:f910::, 2a01:111:f403:f905::4, 2a01:111:f403:f902::, 2a01:111:f403:c91d::a

Authentication

SPF✓ Present -all

DKIM✓ Found (selectors: selector1)

DMARC✓ Present p=none

Raw SPF record

v=spf1 include:spf.protection.outlook.com ip4:64.128.160.11 ip4:64.128.160.12 include:servers.mcsv.net include:_spf1.mbl.edu include:_spf2.mbl.edu include:outboundmail.blackbaud.net -all

Raw DMARC record

v=DMARC1; p=none

Email behavior

Catch-all✗ No

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response315ms

SMTP banner220 SN1PEPF0002BA50.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Thu, 30 Jul 2026 00:30:21 +0000 [08DEE892A7C22E2F]

What this means

This domain has strong email authentication. Messages claiming to come from @mbl.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 \
  -G --data-urlencode "email=test@mbl.edu" \
  -H "Authorization: Bearer cm_live_..."