go.jp - Email Domain Verification & Deliverability Report

The domain go.jp is the official government domain for Japan, used by national government ministries, agencies, and offices. Japan's national government, based in Tokyo, operates through ministries covering finance, foreign affairs, defense, health, education, and trade, serving as the administrative center for the world's fourth-largest economy.

Japanese government domains under go.jp implement email authentication protocols including SPF, DKIM, and DMARC. Japan's National center of Incident readiness and Strategy for Cybersecurity (NISC) provides cybersecurity guidance for government agencies. Phishing attacks impersonating Japanese government agencies target residents and international partners.

Japanese government mail servers associated with go.jp generally do not operate in catch-all mode. The SMTP infrastructure validates recipient addresses and rejects messages to nonexistent mailboxes. Government email systems employ greylisting, rate limiting, and strict inbound filtering to manage correspondence.

Delivering email to go.jp domains requires full compliance with authentication standards. Japanese government email gateways apply thorough content filtering, malware scanning, and sender reputation analysis. Senders should ensure properly configured SPF, DKIM, and DMARC records for reliable delivery to Japanese government recipients.

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