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11.11 最強折扣反應熱烈!
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11.11 最強折扣反應熱烈!
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什麼是郵件伺服器?

郵件伺服器是負責發送和接收電子郵件的計算機程式。發送電子郵件時,電子郵件用戶端會使用簡單郵件傳輸協定 (SMTP) 與發送郵件伺服器進行通信以發送郵件。當您收到電子郵件時,您的電子郵件用戶端會使用郵局協定 (POP) 或 Internet 郵件存取協定 (IMAP) 與接收郵件伺服器通信以檢索郵件。郵件伺服器管理域的電子郵件地址、用戶帳戶和電子郵件流量,並確保將郵件傳遞給正確的收件者。

什麼是 SMTP?

SMTP或簡單郵件傳輸協定是用於透過Internet將電子郵件從一台伺服器發送到另一台伺服器的標準協定。作為使用者,它允許您向收件者的電子郵件伺服器發送電子郵件,並確保有效地完成傳輸。它使用一組命令來路由郵件,確保它們傳遞到目標收件者的電子郵件位址。SMTP在電子郵件通信過程中起著至關重要的作用。

什麼是流行音樂?

POP 或郵局協定是一種與您的郵件用戶端配合使用的電子郵件檢索協定。它允許您下載存儲在遠端伺服器上的電子郵件並將其儲存到您的電腦或行動裝置。此協定還可以説明您通過在本地郵件客戶端中組織電子郵件來管理電子郵件。POP 通常會將郵件下載到您的設備,然後將其從伺服器中刪除,因此您只能從下載郵件的設備訪問它。

什麼是 IMAP?

IMAP 代表 Internet 郵件存取協定,是一種郵件傳輸協定,用於從電子郵件伺服器檢索電子郵件。當您使用電子郵件用戶端檢索電子郵件時,用戶端充當 MUA,並使用 IMAP 與接收郵件伺服器通信以檢索郵件。與 POP 不同,IMAP 允許您從多個設備存取電子郵件,並將郵件保留在伺服器上,直到您選擇刪除它們。

什麼是郵件傳輸協定?

郵件傳輸協定是一組規則,用於控制電子郵件的發送和接收方式。SMTP、POP 和 IMAP 都是郵件傳輸協定的範例。

什麼是郵件交換器記錄?

郵件交換器記錄(也稱為 MX 記錄)是一種 DNS 記錄,它指定負責接受特定域的電子郵件的郵件伺服器。MX 記錄包含按優先順序排列的郵件伺服器清單,這些伺服器應接收發送到特定域的電子郵件。當您發送電子郵件時,MX 記錄可確保您的電子郵件到達屬於該域的正確郵件伺服器。正確的 MX 記錄對於電子郵件傳遞至關重要,必須正確設置才能使電子郵件正常工作。

什麼是電子郵件身份驗證?

電子郵件身份驗證是用於驗證電子郵件寄件者身份的過程。常見的電子郵件身份驗證方法包括寄件者策略框架 (SPF)、域密鑰識別郵件 (DKIM) 和基於域的郵件身份驗證、報告和一致性 (DMARC)。

什麼是防曬係數?

寄件者策略框架 (SPF) 是一種電子郵件身份驗證協定,允許域擁有者指定哪些郵件伺服器有權代表他們發送電子郵件。收到電子郵件后,接收郵件伺服器會檢查寄件者域的SPF記錄,以確定郵件是否合法。

什麼是 DKIM?

域金鑰識別郵件 (DKIM) 是一種電子郵件身份驗證協定,允許域擁有者對其電子郵件進行數位簽名。收到電子郵件后,接收郵件伺服器會檢查 DKIM 簽名,以驗證郵件在傳輸過程中是否未被更改。

什麼是DMARC?

基於域的郵件身份驗證、報告和一致性 (DMARC) 是一種電子郵件身份驗證協定,允許域擁有者指定如何處理未通過 SPF 或 DKIM 檢查的郵件。DMARC 還提供電子郵件身份驗證活動報告,以説明域擁有者識別和防止電子郵件欺騙。

什麼是電子郵件欺騙?

電子郵件欺騙是使用偽造的寄件者地址發送電子郵件的行為。這通常是網路釣魚詐騙的一部分,攻擊者試圖通過偽裝成受信任的實體來誘騙收件者洩露敏感資訊。

什麼是郵件中繼?

郵件中繼是用於在不同電子郵件伺服器之間轉發電子郵件的郵件伺服器。郵件中繼可用於在不同域之間路由郵件,或整合多個伺服器之間的電子郵件通信。

什麼是郵件閘道?

郵件閘道是一種用於過濾和控制郵件流量的郵件伺服器。郵件閘道可用於實施郵件策略,例如根據內容或發件者阻止或重定向電子郵件,並防範電子郵件傳播的威脅,例如垃圾郵件、病毒和網路釣魚攻擊。

什麼是電子郵件用戶端?

電子郵件客戶端是用於訪問和管理電子郵件的計算機程式或 Web 應用程式。電子郵件用戶端的示例包括Microsoft Outlook和Gmail。

什麼是網路郵件用戶端?

網路郵件用戶端是一種通過 Web 瀏覽器存取的電子郵件用戶端。Web 郵件用戶端通常提供基於 Web 的介面來訪問和管理電子郵件,並且通常用作傳統電子郵件用戶端的替代方法。

什麼是郵件使用者代理?

郵件使用者代理 (MUA) 是用於發送和接收電子郵件的程式或服務。MUA 的範例包括電子郵件用戶端和 Web 郵件用戶端。

什麼是郵件遞送代理?

郵件傳遞代理 (MDA) 是用於將電子郵件傳遞到收件者郵箱的程式或服務。MDA 通常與郵件傳輸代理 (MTA) 結合使用,MTA 負責在不同郵件伺服器之間傳輸郵件。

什麼是郵件傳輸代理?

郵件傳輸代理 (MTA) 是一種程式或服務,用於在不同郵件伺服器之間傳輸電子郵件。MTA 使用郵件傳輸協定(如 SMTP)來發送和接收郵件。

什麼是郵件佇列?

郵件佇列是郵件伺服器用來臨時保存等待傳遞的電子郵件的儲存區域。郵件佇列允許伺服器以更有效和更有條理的方式處理郵件,並有助於防止郵件丟失或延遲。

什麼是退回郵件?

退回郵件是發送給電子郵件寄件者的自動電子郵件,通知他們無法傳遞其郵件。退回郵件通常是在收件者的電子郵件地址或郵件伺服器出現問題時生成的,或者當郵件被標記為垃圾郵件時。

什麼是通訊組清單?

通訊組清單是一組電子郵件地址,用於一次向多個收件者發送郵件。通訊組清單可以由單個使用者創建和管理,也可以由整個域的管理員創建和管理。

什麼是電子郵件別名?

電子郵件別名是與現有電子郵件帳戶關聯的附加電子郵寄地址。電子郵件別名可用於為使用者創建備用電子郵件位址,或將電子郵件轉發給多個收件者。

什麼是電子郵件轉發?

電子郵件轉發是一項功能,允許將電子郵件從一個電子郵件地址自動轉發到另一個電子郵件位址。電子郵件轉發可用於合併多個電子郵件帳戶,或在使用者離開其主電子郵件帳戶時將電子郵件重定向到其他位址。

什麼是郵件清單?

郵件清單是用於向一組收件者發送郵件的電子郵件位址集合。郵件清單可用於多種目的,例如分發新聞稿、公告或其他類型的資訊。

什麼是消息佇列?

郵件佇列是郵件伺服器用來臨時保存等待處理的電子郵件的儲存區域。消息佇列可用於通過允許以可預測和有組織的方式處理消息來提高電子郵件傳遞的效率和可靠性。

什麼是郵件頭?

郵件頭是電子郵件的一部分,其中包含有關郵件的元數據,例如寄件者、收件者、主題和日期。默認情況下,郵件標頭在電子郵件用戶端中通常處於隱藏狀態,但需要解決電子郵件傳遞問題的使用者可以查看。

什麼是郵件伺服器日誌?

郵件伺服器記錄是一個檔案,其中包含郵件伺服器的所有傳入和傳出電子郵件流量的記錄。郵件伺服器日誌可用於診斷和解決電子郵件傳遞問題,以及出於安全或合規性目的監控電子郵件流量。

什麼是 POP3?

POP3 或郵局協定版本 3 是用於從郵件伺服器檢索電子郵件的標準協定。POP3 通常由電子郵件用戶端用於將郵件從伺服器下載到本地電腦。

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