How to Use a Self Signed Certificate for Exchange 2013 2016 2019 and beyond when Security requirments require less then 2 year validity period.

I had an interesting one related to Exchange Internal Certificates. The Validity period is defauling to 4 years in newer Exchange versions. I am sure there may be a registry key to change the valiidity period of new-Exchangecertificate.  Of serveral ways to approach this, I opted to use a simple powershell command instead. Below I […]