إصلاح تواريخ النسخ اليدوي عبر IMAP في Outlook

Many المستخدمين and المسؤولين attempt to migrate emails between خادم البريدs by adding both IMAP accounts to Outlook and dragging or copying messages from one account to the other. This manual approach uses Outlook as an intermediary: Outlook downloads the email from the source IMAP server, then uploads it to the destination IMAP server using the IMAP APPEND command. During this upload, خادم الوجهة adds a new رأس Received with the current timestamp.

The manual IMAP copy approach has no mechanism for preserving the original INTERNALDATE. Unlike dedicated migration tools (which at least attempt to set the INTERNALDATE during APPEND), Outlook's copy operation does not pass a date parameter to خادم الوجهة. The destination server sets the INTERNALDATE to the upload time, and adds its own رأس Received. Both date sources now reflect the copy date rather than the original received date.

Users who perform manual IMAP copies often do so because they believe it is the simplest approach, or because they are moving a small number of emails. ومع ذلك، even a small manual copy can corrupt dates for hundreds of messages if an entire folder is selected. The تلف التاريخ is not apparent until after the copy is complete, when the المستخدم notices that all copied messages now show the copy date in Outlook's received column.

After a manual IMAP copy, Outlook displays the copy date for all transferred messages. The "Received" column shows when the message was copied, not when it was originally received. If the المستخدم deleted the originals from الخادم المصدر, there is no way to see the التاريخ الصحيحs in Outlook without fixing the headers.

The impact is identical to a migration tool-caused تلف التاريخ: sorting, searching, and filtering by date all operate on the copy timestamp. Outlook's date-based groupings (Today, Yesterday, This Week, etc.) are disrupted. Unlike migration tool scenarios that عادةً affect an entire صندوق البريد, manual IMAP copy تلف التاريخ may affect a subset of صندوق البريد (only the folders or messages that were manually copied), creating an inconsistent mix of correctly-dated and incorrectly-dated messages within the same صندوق البريد.