Fixing Error Code 17099 in MS Outlook for Mac 2011

MS Outlook is such a great application that users prefer using it even if they work on Mac OS. To fulfill the need, Mac Outlook 2011 is developed that has the functionality as that of on Windows OS. It offers calendaring, journaling, setting appointments etc., in addition to emailing. Users are provided with multiple interesting features.

With enjoying MS Outlook on Mac based system, users may also encounter errors while sending or receiving emails, alike Windows. One such common error is as follows:

“Mac Outlook Error Code 17099”

The error does not allow users to send or receive email messages and states that the mail contains spam content or virus.

Root Cause of the Error

• The error crops up when SMTP server returns a transient error or an unexpected code.
• The error may also occur when you try to send emails to large email groups and your ISP (Internet Service Provider) has specified a number limit


In order to resolve the problem, you need to use Microsoft Database Utility to rebuild the identity database, for which, do the following:

1. Close all the running applications.

2. Press and hold the ‘Option’ key and open Outlook 2011. You can also open Application folder and then MS Office 2011 to find the utility. Access the Office folder, and hit double-click on Microsoft Database

3. Select the database that has to be maintained in Database Utility window, and click on ‘Rebuild’.

4. You will see a window ‘Rebuilding Main Identify’ showing progress. On completion of the progress, a message will be shown “Your database was rebuilt successfully.”

5. Click on ‘Done’.

However, you might not find the given workaround as fruitful as expected, because it does not fulfill the task every time and the error continues to occur. In such cases, it is a wise idea to  repair corrupt Mac Outlook backup files (.olm), and restore all the lost or inaccessible mail items in Microsoft Outlook for Mac 2011. Such repairing can be done using Stellar Repair for OLM.

This application will help you recover mail items, such as email messages, contacts, attachments, tasks, calendars and notes. It will also help in severely corrupt OLM files. These applications are built by experienced software developers hence are great at performing data recovery. Furthermore, they are widely available over the web and can be purchased by placing an order online.