Troubleshoot email delivery in Exchange on Microsoft Online

I had a problem the other day where I noticed that of all the emails I sent to the same recipient outside my orgianization, some were delivered and some were not. They were not in Junk mail and I did not receive any non-delivery reports.

I find the Microsoft Online user interface to be a little… puzzling … to use a nice word. I have learned that I cannot expect to find any links to the admin interface but have to remember to use my bookmarked url to

Exchange Admin Center (EAC)

Yesterday I learned that I can also access something called the Exchange Admin Center (EAC). From there it is possible to, among other things, run a mail trace for any message sent the last 7 days.

1. Go to (if you, like me, have a separate admin account, make sure you sign in with this)

2. Click Mail flow and then Message trace

3. Fill out the Sender and Recipient information and hit search. Double click any message to see details.

My undelivered emails

From the EAC Message trace I can see that the messages that were not delivered are marked as “Spam” and action set to “Use high risk delivery pool”. It is then set to “Send” and details say “Message transferred from: To_DefaultOpportunisticTLS”.

My best guess is that it means the email is currently in waiting mode and will be delivered or fail some time in the future… I have contacted Microsoft support and will update this post when I get an answer.


Source: Microsoft help article: Troubleshoot email delivery using the Exchange Online message trace tool

Barack Obama Presidential Motorcade in Stockholm, Sweden

This is a little off topic…

The other day (September 4, 2013) US Preisdent Barack Obama made a state visit to my hometown of Stockholm, Sweden. On my way walking to a meeting I got stuck and watched the presidential motorcade on it’s way from the airport to the president’s hotel. So how could I not grab my iphone and film the motorcade as it passed me by? 🙂

If you watch closely (or playback in slow motion) you can see Obama waving from the second limo (aka “The Beast”)

In the background you can see Arvfurstens palats where the State Department (Foreign Ministry) has its offices and the Royal Opera House. Just opposite of where I am standing is King Karl XII‘s square which is located in Kungsträdgården, King’s Garden. When I turn the camera you can see the Stockholm Grand Hotel which was the motorcade’s destination and where President Obama stayed.

Big parts of central Stockholm was locked down for the two-day visit, and it was oh so quiet and nice without all the traffic, i wish they could make it permanent.