theoremoftheday.org

Email infrastructure report · Last checked 27 Jul 2026, 14:37 UTC

Summary

theoremoftheday.org uses Self-hosted / Custom for email and has DMARC configured. It is not catch-all.

Mail provider

ProviderSelf-hosted / Custom self-hosted

Primary MXmx4.34sp.com

MX records

Priority	Hostname	IPs
10	mx4.34sp.com	46.183.13.208, 2a00:1ee0:2:8::2eb7:dd0
10	mx3.34sp.com	46.183.13.250, 2a00:1ee0:2:8::2eb7:dfa

Authentication

SPF✗ Missing

DKIM? Not detected via common selectors

DMARC✓ Present p=none

Raw DMARC record

v=DMARC1; p=none

Email behavior

Catch-all✗ No

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response94ms

SMTP banner220 mx6.mailarray.34sp.com ESMTP Postfix

What this means

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

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