post.j-parc.jp

Email infrastructure report · Last checked 24 Jul 2026, 01:37 UTC

Summary

post.j-parc.jp uses Self-hosted / Custom for email and has SPF and DMARC configured. It is not catch-all.

Mail provider

ProviderSelf-hosted / Custom self-hosted

Primary MXjms.j-parc.jp

MX records

Priority	Hostname	IPs
10	jms.j-parc.jp	192.153.107.29
20	jms1.j-parc.jp	192.153.107.28

Authentication

SPF✓ Present ~all

DKIM? Not detected via common selectors

DMARC✓ Present p=none

Raw SPF record

v=spf1 +ip4:192.153.105.0/24 +ip4:192.153.106.0/23 +ip4:192.153.108.0/22 include:spf.webfile.jp ~all

Raw DMARC record

v=DMARC1; p=none; rua=mailto:dmarc-p@ml.j-parc.jp

Email behavior

Catch-all✗ No

Disposable✗ No

Free provider✗ No

STARTTLS? Could not determine (server rejected handshake)

SMTP response—

SMTP banner—

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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