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rbge.ac.uk

Email infrastructure report · Last checked

Summary

rbge.ac.uk uses Microsoft 365 for email and has SPF, DKIM, and DMARC configured. It is a catch-all domain.

Mail provider

ProviderMicrosoft 365 business
Primary MXrbge-ac-uk.mail.protection.outlook.com

MX records

PriorityHostnameIPs
5rbge-ac-uk.mail.protection.outlook.com52.101.73.26, 52.101.68.10, 52.101.73.16, 52.101.68.16, 2a01:111:f403:ca09::8, 2a01:111:f403:ca04::4, 2a01:111:f403:ca09::, 2a01:111:f403:ca04::a

Authentication

SPF✓ Present ~all
DKIM✓ Found (selectors: selector1, selector2)
DMARC✓ Present p=quarantine
Raw SPF record
v=spf1 ip4:185.7.230.6 include:spf.protection.outlook.com include:authsmtp.com ~all
Raw DMARC record
v=DMARC1;p=quarantine;rua=mailto:9wJATZNrg2M@dmarc-rua.mailcheck.service.ncsc.gov.uk;

Email behavior

Catch-all✓ Yes
Disposable✗ No
Free provider✗ No
STARTTLS✓ Supported
SMTP response5ms
SMTP banner220 DB5PEPF00014B8A.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Tue, 28 Jul 2026 18:12:49 +0000 [08DEE82D53E6CE89]

What this means

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

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