February 2024
Beginner to intermediate
304 pages
9h 13m
Japanese
Content preview from 実務で使える メール技術の教科書 基本のしくみからプロトコル・サーバー構築・送信ドメイン認証・添付ファイル・暗号化・セキュリティ対策まで
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スパムメールを防ぐ技術
スパムメールをプロバイダが防ぐ方法とし
て、第2章ではOP25Bや送信者の認証
（SMTP AUTH）などについて解説しました。
本章では、送信者を偽装したメールが届いた
ときに受信者側で確認する方法の他、スパム
メールに分類されないように送信者側で工夫
する手法を解説します。
第
5
章
185-216̲mail̲NSM̲F2.indd185185-216̲mail̲NSM̲F2.indd185 2024/01/2510:062024/01/2510:06
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.