I need to sync Exchange Global Address Lists (GAL) across two separate domains. One domain is running Exchange 2010 on a 2008 R2 server and the other is running Exchange 2013 on a 2012 server. I found this post that is over a year old and wondering if the suggested solution was still a good option for me in my environment: http://community.spiceworks.com/topic/230132-inter-organization-gal-sync
Or I'm obviously open to other suggestions as well. Basically I would like to sync all mail enabled contacts between the 2 domains and calendars as well, if possible. I have been searching all day for a good solution and have been left a little confused by each solution I have come across. So I finally decided to get feedback from the Spiceworks world.
Thanks in advance!