I have worked with Exchange Server for a number of years but have very limited experience with implementing email encryption. I was recently assigned a project for a client regarding a request to setup Mutual Authenticated TLS encryption for a large number of companies that they do business with and I have been researching the subject. I have a couple of questions that I was hoping you may be able to answer or provide some additional resources that clarify the procedure for me.
The client is currently running SBS 2008 with Exchange Server 2007. A TLS Certficate has already been purchased and installed and I have confirmed that it is working properly through testsender@CheckTLS.com The list they provided has 190 companies that need to configured for Mutual Auth TLS and I am confused as to what steps I need to implement at this point.
I have been reviewing two technet articles:
This article applies to Exchange Server 2010 but I believe the configuration would be similar for Exchange 2007 as this article keeps coming up when I select links from articles discussing Exchange 2007. Or am I mistaken?
This article applies to Exchange Server 2007 but I am confused about the differences between the two articles - namely the Exchange 2010 article appears to refer to using only cmdlet commands and the Exchange 2007 document refers to using SMTP Connector wizard.
Besides trying to figure out which set of instructions I should be following, I have a several addition questions:
Should my first step be to contact each of the 190 companies on the list to confirm that they are able to send/receive Mutual Auth TLS on their end before I begin setting up each domain?
Is there a way to add all the required domains at one time or do I need to add each one via a separate command?
Will the new connectors only enforce the Mutual Auth TLS for the domains I provide? I want to ensure email sent to other domains that can not accept encrypted email are not affected when I add the connectors.
Any information you can provide on this subject would be greatly appreciated. Thank you.