---
title: "Hisashi Hirajo (@hirajo) | Hashnode"
description: "Hisashi Hirajo (@hirajo) writes on Hashnode. Read their latest articles and follow their work."
url: "https://hashnode.com/@hirajo"
---

@hirajo

# Hisashi Hirajo

@hirajo · Joined June 2025

## Comments

[Thanks for reading it that closely. That warm-up was easy to miss because nothing looked broken on my end. Every message still passed authentication. The subdomain idea makes sense. I didn't split it because once I'd found the warm-up still sending from a server nobody was reading, the cause was clear enough, and I haven't had a reason to rerun it. Opens from Gmail users were 0.2% in August and about 20% in early October.](https://hashnode.com/posts/spf-dkim-and-dmarc-all-passed-gmail-still-sent-my-mail-to-spam/6abfca357047004713ea9c84/comment/6ad2915c713b35d1a417b289#reply-6ad4af949c4b0ecb483195dd)

Reply · Article · Oct 18 · [SPF, DKIM and DMARC all passed. Gmail still sent my mail to spam.](https://hashnode.com/posts/spf-dkim-and-dmarc-all-passed-gmail-still-sent-my-mail-to-spam/6abfca357047004713ea9c84)