So i started to look into the idea of adding photos of our staff to our GAL and thought I would note down some things i learnt on the way. The first i would suggest is to have a good read to the below 2 URL’s as they have documented quite well what you need to do and how to do it. I will go over the basic steps, and tips i learnt along the way.
GAL Photos in Exchange 2010 and Outlook 2010
GAL Photos: Frequently Asked Questions
The word GAL and Exchange get thrown about a bit so its easy to get confused with where the image is being stored. It actually goes into Active Directory and is stored under thumbnailPhoto field as a hexadecimal. You can upload it a number of ways but i chose to use an Exchange powershell command.