*.yourdomain.com を共通名としてワイルドカード証明書を取得することができます。この証明書は www.yourdomain.com, mail.yourdomain.com, secure.yourdomain.com, anything.yourdomain.com などを保護します。言い換えれば、ワイルドカード文字 (*) を置き換えるサブドメインであれば、どのようなサブドメインでも動作します。www.example.net, www.example.us, www.yourdomain.com, anything.yourdomain.us などを保護することができます。
18. B2C プラットフォーム上で証明書の期限切れをユーザに警告するように設定できますか?
いいえ。これはプラットフォーム外で管理する必要があります。
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