Exchange – Enabling Priority Queuing

Those of you who deal with Exchange are familiar with the fact that priority emails, that are sent from Outlook or OWA can be changed very easily. Even if an email is sent with “High Importance”, it makes no difference to Exchange by default. All emails will be queued and delivered in the order they are received. This is where “Priority Queuing” comes in, and it will be useful to configure this feature, so that emails marked high priority are processed and delivered before any others in the queue, regardless of when they were received by the server.

Priority Queuing is disabled in Exchange by default. It is very easy to enable it by editing the EdgeTransport.exe.config file in the Bin directory and restart the Exchange Transport Service.

Navigate to the Bin directory and find EdgeTransport.Exe.Config file…

Open it using notepad and find the line that says PriorityQueuingEnabled is set to false:

Change the value from “false” to “true” and save the file. New line should looks like:

Restart Exchange Transport service.

Once this is complete, Exchange will deliver high priority emails before any other ones and normal priority emails will be delivered before the low priority ones. By default, all emails sent from Outlook & OWA have normal priority.

Written by Misha Hanin

Trusted Business & Technology Advisor, Solutions Managing Director & Senior Solutions Architect at iRangers International Inc. with more than 25 years of experience in the field of information technology, infrastructure analysis and design, implementing innovative and leading technologies for International companies around the globe in public and private sectors.

Over the years I was able to develop very strong technical and engineering skills which helped me to earn trusted advisor status with our clients. As one of the nearly 500 trained Microsoft Certified Masters (MCM) in The World (during 10 years existence of MCM program, just about 500 people in The World participated in this very intensive training), I have a winning track record in building and bringing projects to operational and measurable success.

I am honored to have been awarded Microsoft Most Valuable Professional (MVP). This award is given to "exceptional, independent community leaders who share their passion, technical expertise, and real-world knowledge of Microsoft products with others."