Category Archives: Outlook

Out of Office not working – Using Exchange Autodiscover Redirect

Had an interesting one today with a bit of a lesson at the end of the article.


Users are able to connect to Exchange with Outlook, send and receive mails etc. Users are however unable to set up their Out of Office using Outlook but they are able to set it using Outlook WebApp. We have a hybrid Exchange environment with 2010 and 2007 CAS servers. In the back-end we are running an Exchange 2007 CCR Cluster.

Past troubleshooting with regards to Out of Office not working has taught me to check and test autodiscover. I bet that the OAB is also not downloading?
I ran the normal checks such as checking the certificates and running nslookup to see if redirects to asn it did.

My next step was to check IIS as I’ve had a previous issue there. Low and behold I noticed that an ex-admin used his credentials for authentication. This caused issues as the admin’s account has been deleted a few days ago as he left our company. I then created a service account and added the credentials in IIS to ensure that this does not happen again. Users reported that Out of Office is working again.

Below are some screenshots for where I changed the credentials. Note that when I tried opening any settings under the Autodiscoverredirect Webpage in IIS that the error explicitly told me that the account for admin-abc had problems authenticating. The challenge was that I was not too sure where this is supposed to be changed. But here you go:

1. Open IIS on your CAS server and browse to Sites => AutodiscoverRedirect (Or whatever you named it)


2. On the right click on “Advanced Settings”


3. Click on “Physical Path Credentials” and then set. Add your service account credentials and save.


This solved my issue with redirection.

Lesson: No matter how many years of experience admins have, the still seem to take the quick route of using their personal credentials where a service account should be used causing issues for your users and customers. Don’t be a lazy engineer and use the service accounts and remember to document EVERYTHING!


The font is very small and the recipient sees very LARGE fonts when composing a new e-mail in Outlook

I was contacted this week with a very interesting problem when a user is composing a new e-mail in Microsoft Outlook this week.

The problem:

The user starts to compose a new e-mail but the font is really small. When the recipient receives the e-mail they found that the font is very big on the recipients side. Now this could be a very confusing issue if you think about it. How does the font just change size from the sender to the recipient?

First things most people would look at is the mail filtering applications or devices that their companies use. This brings me to the old saying in IT, start at the basics. I’m quite guilty of starting to look at the problem at an in-depth level when most of the time it’s a basic setting somewhere.

What we found was that the user compiling the new e-mail had Outlook’s zoom level (found at the bottom right in Outlook) set to a small percentage. This led to the user increasing the font size so that it is readable. The recipient had the Outlook client set to 100% which is standard. This in turn magnified the font.

The problem was resolved when the user sending the mail set the zoom level to a 100%.

This was quite an interesting problem and shows how easily a small setting could potentially stuff us around for days on end.

Another example:

I had an issue with Auto Discover on Exchange 2010. Going through all the settings in Exchange, DNS and IIS showed that everything was configured properly. We then unchecked a check box in IIS, restarted IIS, checked the setting again, restarted IIS and voila the Auto Discover worked again.

I’d like to thank Michael P. Kassner ( for letting me know about this interesting Outlook problem. This was a prime example of how easily small settings could make your day a mess.

Be sure to follow Michael P. Kassner for some interesting reading on IT Security.

Below is a screen shot of the zoom bar in Outlook:

Outlook Zoom Bar

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