cyut.edu.tw

Email infrastructure report · Last checked 28 Jul 2026, 17:28 UTC

Summary

cyut.edu.tw uses Microsoft 365 for email and has SPF and DKIM configured. It is not catch-all.

Mail provider

ProviderMicrosoft 365 business

Primary MXcyut-edu-tw.mail.protection.outlook.com

MX records

Priority	Hostname	IPs
0	cyut-edu-tw.mail.protection.outlook.com	52.101.157.80, 52.101.137.0, 52.101.124.117, 2a01:111:f403:cc1f::4, 2a01:111:f403:cc09::, 2a01:111:f403:cc1a::8

Authentication

SPF✓ Present -all

DKIM✓ Found (selectors: selector1)

DMARC✗ Missing

Raw SPF record

v=spf1 ip4:163.17.1.0/24 ip4:163.17.2.21 include:spf.protection.outlook.com -all

Email behavior

Catch-all✗ No

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response1105ms

SMTP banner220 SG2PEPF000B66CE.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Tue, 28 Jul 2026 17:28:21 +0000 [08DEE83472543D87]

What this means

This domain is missing DMARC, which weakens its protection against email spoofing. Adding this record would improve deliverability and reduce the risk of impersonation.

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