Google WorkspaceでのBitTitan MigrationWiz移行日付の修正
BitTitan MigrationWizの移行がGoogle Workspaceで間違った日付を表示する理由
When BitTitan MigrationWiz migrates メールボックス into Google Workspace, each email is uploaded to Gmail's servers through the Gmail API or IMAP. During this process, Google's mail infrastructure records the upload timestamp as the message's INTERNALDATE. BitTitan also introduces a Receivedヘッダー that reflects the 移行日, pushing it to the top of the ヘッダーチェーン.
Google Workspace handles date display in a unique way compared to other platforms. The Gmail Webインターフェース 通常 references the "Date" header from the original email, which means messages may appear with the 正しい日付 when viewed through the Gmail web client. ただし、 the IMAP INTERNALDATE remains set to the 移行日. Any IMAP client connecting to that Google Workspace メールボックス (Outlook, Thunderbird, Apple Mail) will display the 移行日 instead of the 元の日付.
This creates a confusing split: the same email looks correct in Gmail on the web but shows the 間違った日付 in Outlook or Apple Mail connected to the same account. IT 管理者 receive conflicting reports from ユーザー, making the problem harder to diagnose. Organizations that migrated to Google Workspace using BitTitan and have ユーザー accessing mail through both the Webインターフェース and desktop clients face this dual-date confusion across their entire ユーザー base.
Google Workspaceへの影響
In Google Workspace, the primary impact hits ユーザー who access their メールボックス through IMAP clients rather than the Gmail Webインターフェース. Outlook, Apple Mail, and Thunderbird connected via IMAP to Google Workspace all display the 移行日 because they read the IMAP INTERNALDATE. Gmail's web client masks the problem by using the Dateヘッダー, but the underlying data is still corrupted.
Google Workspace's admin tools and Vault (the コンプライアンス and archiving solution) also reference the INTERNALDATE for 保持 and hold policies. Organizations subject to regulatory requirements that rely on Google Vault for email archival and legal discovery find that date-based searches return inaccurate results. The 移行日 replaces the original timeline of communications, undermining the integrity of コンプライアンス workflows that depend on accurate message timestamps.
よくある質問
Why do emails look correct in Gmail but wrong in Outlook after BitTitan migration?
Gmail web client uses the Dateヘッダー from the original email for display, which is unaffected by migration. ただし、 Outlook reads the IMAP INTERNALDATE, which gets overwritten 移行中. This is why the same email shows different dates depending on which client is used.
Does Redate.io work with Google Workspace admin accounts?
はい。 Redate.io connects to Google Workspace through ドメイン全体の委任 using a Service Account. This allows 管理者 to fix dates across all ユーザー メールボックス in the 組織 without requiring individual ユーザー credentials.
Will fixing the INTERNALDATE affect how emails appear in Gmail web?
いいえ。 Gmail web already displays the correct Dateヘッダー. Redate.io corrects the INTERNALDATE and Receivedヘッダーs so that IMAP clients (Outlook, Apple Mail) also display the 元の日付. The Gmail web experience remains unchanged.