If you are seeing messages only up to February 17 and then encountering a "server offline" message, it may indicate that your Outlook is not synchronizing properly with the Exchange server. This can happen if the cached mode settings are limiting the amount of mail that is being synchronized.
To troubleshoot this issue, you can try the following steps:
- Check your internet connection to ensure that you are online.
- Adjust the cached mode settings in Outlook:
- Start Outlook.
- Go to the File tab and click on Account Settings, then again on Account Settings.
- On the E-mail tab, double-click your Microsoft Exchange account.
- In the Change Account dialog box, adjust the Mail to keep offline slider to a longer duration or select All to synchronize all email messages.
- Click Next, then OK to restart Outlook and apply the changes.
- Force a resynchronization of your Inbox:
- Right-click the Inbox folder and select Properties.
- In the Inbox Properties dialog, select the General tab and click Clear Offline Items.
- Click OK, then press Shift+F9 to force the resynchronization.
If the problem persists, it may be beneficial to check if there are any issues with the Exchange server or consult your IT support for further assistance.