I would like to deploy secure email solution through S/MIME in my organisation.
My organisation is quite large 1000 users, all Windows user with Microsoft Outlook. The question is now, what would be the best solution and why to deploy PKI infrastructure on my environment?
I knew that Windows has a PKI solution and can be deployed at no cost and it is integrated with Windows Active Directory but
If we have our own PKI, Can this be trusted by third party person who want to send email to us?
What would be the better option?