Perbaiki Tanggal Migrasi Exchange IMAP Migration di Outlook

Microsoft Exchange Server includes a built-in IMAP migration feature (available through the Exchange Admin Center and PowerShell) that allows administrator to migrate kotak surat from third-party server IMAPs into Exchange Online or on-premises Exchange. This native migration tool terhubung ke the source server IMAP, downloads each message, and uploads it to the destination Exchange kotak surat.

Selama fase pengunggahan, Exchange's pipeline transport processes each message as though it were a newly received email. The pipeline adds header transport, including a header Received with the current processing timestamp. Exchange also sets the PR_MESSAGE_DELIVERY_TIME (the property Outlook reads for its "Received" column) to the stempel waktu unggah. The original IMAP INTERNALDATE from server sumber is not carried over to the destination Exchange kotak surat.

Administrators who use Exchange's native IMAP migration expect Microsoft's own tool to handle date preservation correctly. The discovery that all migrated emails now display the tanggal migrasi in Outlook is unexpected, terutama karena Exchange's migration documentation does not prominently warn about this behavior. The issue affects every kotak surat processed by the migration batch, and Exchange provides no built-in mechanism to correct the dates after migration.

Outlook terhubung ke the migrated Exchange kotak surat menampilkan tanggal migrasi in the "Received" column for setiap email. The "Sent" column for item terkirim also reflects the stempel waktu migrasi karena Exchange's pipeline transport processes item terkirim the same way during upload. The Outlook calendar pane, which references email dates for meeting-related messages, shows intanggal yang benars for migrated meeting invitations and responses.

Exchange's native pencarian (used by Outlook's pencarian bar) indexes the corrupted waktu pengiriman. Date-based pencarianes return wrong results. Outlook's AutoArchive feature, which moves or deletes emails based on age, miscalculates message age karena it uses the tanggal migrasi. Rules that trigger on tanggal diterima and Conditional Formatting rules that highlight emails by age also operate on the tanggal yang salahs, producing unexpected behavior across the Outlook experience.