Some user's on another domain (.gov domain) are getting these replies back when trying to e-mail some users on our own domain (non-government domain).
The messages will read like this to them:
The message or an attachment did not reach the intended recipient(s).!
Date: Wed, 22 May 2013 02:19:33 -0600
Reason: domain.gov must use TLS
Is this usually something can be fixed on the exchange end of our domain or something going on with the government domain email server?
To show how to generate a certificate request in Exchange 2013. We show this process by using the Exchange Admin Center.
Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center.
Navigate to the Servers >> Certificates…