We've acquired 3 enterprises over the past 4 years.
When we built our Exchange server, we decided to have an address policy with the 4 domain names, applied to everyone.
Here is how it looks like:
Starting this year, we want a policy that will assign ONLY the primary domain to our newly created users
But, we want to keep the old suffixes to our accounts already created.
Is there a way to apply an address policy based on account creation date?
If not, what is the best practice in case you want a policy for new accounts only?