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Message-ID is a unique identifier for a digital message, most commonly a globally unique identifier used in email and Usenet newsgroups. Message-IDs are required to have a specific format which is a subset of an email address〔(RFC5322 – Internet Message Format )〕 (though Microsoft Outlook is known to generate invalid IDs with three parts〔(SpamAssassin Bug 5666 – New Outlook Message-ID format causes FORGED_MUA_OUTLOOK FP )〕) and to be globally unique. That is, no two different messages must ever have the same Message-ID. A common technique used by many message systems is to use a time and date stamp along with the local host's domain name, e.g., 950124.162336@example.com.〔(RFC2392 – Content-ID and Message-ID Uniform Resource Locators )〕 Message-IDs, if present, are generated by the client program sending the email (mail user agent, or MUA) or by the first mail server (mail submission agent, or MSA).〔(RFC5322 – Internet Message Format )〕 A large number of mails to public mailinglists can be found via their Message-ID by using a link of the form == See also == * RFC 2111 Content-ID and Message-ID Uniform Resource Locators * RFC 5322 Internet Message Format * (Recommendations for generating Message IDs ) 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「Message-ID」の詳細全文を読む スポンサード リンク
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