CheckMail

mail.dendai.ac.jp

Email infrastructure report · Last checked

Summary

mail.dendai.ac.jp uses Self-hosted / Custom for email and has SPF and DMARC configured. It is a catch-all domain.

Mail provider

ProviderSelf-hosted / Custom self-hosted
Primary MXprimary.ap.email.fireeyecloud.com

MX records

PriorityHostnameIPs
10primary.ap.email.fireeyecloud.com3.112.99.4, 3.112.99.3, 3.112.99.5
20alt1.ap.email.fireeyecloud.com3.112.99.5, 3.112.99.4, 3.112.99.3
30alt2.ap.email.fireeyecloud.com3.112.99.5, 3.112.99.3, 3.112.99.4
40alt3.ap.email.fireeyecloud.com3.112.99.5, 3.112.99.3, 3.112.99.4

Authentication

SPF✓ Present ~all
DKIM? Not detected via common selectors
DMARC✓ Present p=none
Raw SPF record
v=spf1 ip4:133.20.0.0/16 ip4:133.14.0.0/16 ip4:34.246.48.85 ip4:34.252.161.144 include:spf.protection.outlook.com include:_spf.google.com include:fe-etp.ntwk.dendai.ac.jp +mx ~all
Raw DMARC record
v=DMARC1; p=none; rua=mailto:dmarc_report@mrcl.dendai.ac.jp; ruf=mailto:dmarc_report@mrcl.dendai.ac.jp

Email behavior

Catch-all✓ Yes
Disposable✗ No
Free provider✗ No
STARTTLS✓ Supported
SMTP response610ms
SMTP banner220 2.0.0 mx.ap.email.fireeyecloud.com ESMTP

What this means

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

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