翻訳と辞書 Words near each other ・ Pushing the Senses ・ Pushing the Senses (song) ・ Pushing the World Away ・ Pushing Tin ・ Pushing Ukhrul ・ Pushing, Tajikistan ・ Pushit ・ Pushka ・ Pushkalavati ・ Pushkar ・ Push Comes to Shove ・ Push Comes to Shove (album) ・ Push dagger ・ Push Down ・ Push Eject ・ Push email ・ Push for Coin ・ Push Girls ・ Push in the back ・ Push Interactions ・ PuSh International Performing Arts Festival ・ Push It ・ Push It (Garbage song) ・ Push It (Rick Ross song) ・ Push It (Salt-n-Pepa song) ・ Push It (Static-X song) ・ Push It Baby ・ Push It to the Limit ・ Push It to the Limit (Corbin Bleu song) ・ Push Kashan Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Push email ： ウィキペディア英語版 Push email Push email is an email system that provides an always-on capability, in which new email is actively transferred (pushed) as it arrives by the mail delivery agent (MDA) (commonly called mail server) to the mail user agent (MUA), also called the email client. Email clients include smartphones and, less strictly, IMAP personal computer mail applications. == Comparison with polling email == Regardless of whether the receiver uses polling email, outgoing mail is generally ''pushed'' from the sender to the final mail delivery agent (and possibly via intermediate mail servers) using Simple Mail Transfer Protocol. However, if the receiver uses a polling email delivery protocol, the final step from the last mail delivery agent to the client is done using a poll. Post Office Protocol (POP3) is an example of a polling email delivery protocol. At login and later at intervals, the mail user agent (client) polls the mail delivery agent (server) to see if there is new mail, and if so downloads it to a mailbox on the user's computer. Extending the "push" to the last delivery step is what distinguishes push email from polling email systems. The reason that polling is often used for the last stage of mail delivery is that, although the server mail delivery agent would normally be permanently connected to the network, it does not necessarily know how to locate the client mail user agent, which may only be connected occasionally and also change network address quite often. For example, a user with a laptop on a Wi-Fi connection may be assigned different addresses from the network DHCP server periodically and have no persistent network name. When new mail arrives to the mail server, it does not know what address the client is currently assigned. The Internet Message Access Protocol (IMAP) provides support for polling and notifications. When a client receives a notification from a server, the client may choose to fetch the new data from the server. This makes retrieval of new messages more flexible than a purely push system, because the client can choose whether to download new message data. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Push email」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.