How To Fix 17099 Error In MS Outlook? MS Outlook is one such greatest email application which users prefer to use it even if they are working on Mac OS system. To fulfill the need, the Mac Outlook 2011 is entirely developed with a great functionality as that of the Windows operating systems. The Outlook further is known for its huge features such as calendaring, journaling, setting up of appointments etc., in addition to emailing facility for users. Users are thus provided with a multiple interesting features. With enjoying MS Outlook on Mac based system, users may some point in their life encounter errors while sending or even receiving emails, similar to Windows. One such common error is Mac Outlook Error Code 17099 which is defined by a professional team member working at Outlook technical support department that this error restricts users to send or receive email messages directly and states that the mail contains spam features or even may have viruses. The error will immediately crop up when the SMTP server returns a transient error or an unexpected code. This error generates while a user is trying to send emails to a large email groups and their ISP (Internet Service Provider) has specified a maximum number limit. Steps to fix 17099 error in MS Outlook Step1: Closing the applications ·It is suggested by users to close all the running applications immediately. Step2: Application folder ·Tap and hold the 'Option' key for a while and then open the Outlook 2011. Users are allowed to open an "Application" folder and then the "MS Office 2011" to find the utility. Get access to the Office folder, and then hit or simply double-click on the "Microsoft Database Utility" app. Step3: Database selection ·It is advised by Outlook tech support experts to select the database which needs to be maintained in the "Database Utility" window, and then click on the 'Rebuild' options. Step4: "Rebuilding Main Identify" option ·You can now see a window known as a 'Rebuilding Main Identify' which will show its progress. On the completion of the progress, users will receive a message will be displayed as "Your database was rebuilt successfully." ·Here you are completely done with the process. Get your issues fix related to Outlook email instant by getting in touch with our professionals at Outlook customer support Toll-Free 1-800-213-8289 department. We are 24 hours available for our customers