It appears that I have inadvertently applied a single secure certificate to the email of the entire group of virtual domains on a server using Postfix. This is causing some problems because email software is somehow automatically seeking to connect to the secure certificate of one of our virtual domains, rather than the secure self signed certificate of the server/postfix.
This was accomplished I suspect when I clicked on Apply Certificate to Email. I thought when I was doing that that it would apply only to the appropriate domain, but I'm seeing evidence now that the action is applying that certificate to all the virtual domains on the server which is resulting in refused sending connections to the mail server.
Is there a fix? Can I get the server to revert back to default settings with regard to secure email?