I’m trying to enable TLS authentication on an IIS 6 SMTP relay virtual host, without success. Although I’ve installed a self-signed cert, the option to “Require TLS Encryption
” is greyed out.
To review, here are the steps I took.
1.) Using IIS 7, I created a self-signed cert
2.) I exported this cert to a folder on the server
3.) I imported the cert into the Personal Cert store
4.) I then tried to fully enable TLS but, the option to “Require TLS Encryption” is greyed out, suggesting the cert is either incorrectly formed, or, the virtual relay host does not see it.
Visuals of the steps I took...
. Create Self-signed Cert via IIS 7 Manager
. Export the cert
. Import the Cert into the Personal Certificate Store
. Secure IIS SMTP Virtual Host Using TLS