istmbutembo.edu.cd

Email infrastructure report · Last checked 28 Jul 2026, 17:46 UTC

Summary

istmbutembo.edu.cd uses Self-hosted / Custom for email and has DKIM and DMARC configured. It is not catch-all.

Mail provider

ProviderSelf-hosted / Custom self-hosted

Primary MXmx2.extrahoster.com

MX records

Priority	Hostname	IPs
10	mx2.extrahoster.com	198.23.53.39
10	mx1.extrahoster.com	198.23.53.42

Authentication

SPF✗ Missing

DKIM✓ Found (selectors: default)

DMARC✓ Present p=none

Raw DMARC record

v=DMARC1; p=none;

Email behavior

Catch-all✗ No

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response278ms

SMTP banner220 mx1.supremebox.com ESMTP

What this means

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

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