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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メールの差出人として偽装できないフィールドはどれか。
A）From 欄に表示される名前
B）From 欄のメールアドレス
C）エンベロープ From のメールアドレス（Return-Path）
D）いずれも偽装できる
A）SPF B）DKIM C）DMARC D）BIMI
「エンベロープ From のドメイン」と「送信元のメール
サーバーの IP アドレス」の一致を確認する送信ドメイン
認証の技術はどれか。
A）SPF や DKIM では、Web サーバーに配置した画像ファイルで認
証する
B）SPF や DKIM では、DNS サーバーのテキストレコードで認証する
C）DMARC は SPF や DKIM とは無関係に設定できる
D）BIMI ではメールに添付した画像を使ってロゴを表示する
送信ドメイン認証に使われる手法として正しいものはど
れか。
A）日本語は単語に区切るのが難しいため、英語のみで使われている
B）画像ファイルも自動的に解析される
C）統計的な手法であり、100% の精度でスパムメールを検出するこ
とはできない
D）HTML メールだけに有効な技術である
ベイジアンフィルタについての記述のうち、正しいものは
どれか。
正解）Q1：D、Q2：A、Q3：B、Q4：C
Let's learn about email technology!
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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.