IMAP-SSL is supported, please see:
Email Operators - CA Process Automation - 4.3.1 - CA Technologies Documentation
As for TLSv1.2 communication, this can quickly go down a rabbit hole, however for simply allowing Process Automation to communicate to another application or API that is restricted to accepting only TLSv1.2 protocol communications you will need to do two things:
1. Upgrade the JDK on the orchestrator to 1.7 update 95 or any 1.8 JDK before update 91. Only Proc Auto 4.3.x supports Java 8, so if this is a 4.2.x installation you can only upgrade to 1.7 update 95.
Make sure to uninstall any previous version of Java.
When you have the new version installed, modify the c2osvcw.conf file (lines 5 and 8) to update the Java path.
2. At the bottom of the c2osvcw.conf file, add the following Java argument:
wrapper.java.additional.14=-Djdk.tls.client.protocols=TLSv1.2
Make sure the numeric increment is correct (.13, .14, .15) and make sure to include the "-" before the 'D'.
The rest of the rabbit hole is - if it is only the IMAP communication that requires TLSv1.2 but other applications (such as EEM and anything else) require other protocols, you will need to include those as well. The argument will need to then be any of the following:
wrapper.java.additional.14=-Djdk.tls.client.protocols=SSLv3,TLSv1.1,TLSv1.2
wrapper.java.additional.14=-Djdk.tls.client.protocols=TLSv1,TLSv1.1,TLSv1.2
wrapper.java.additional.14=-Djdk.tls.client.protocols=SSLv3,TLSv1,TLSv1.1,TLSv1.2
Double check with your other appllications. EEM at this time requires TLSv1.1, but you may have other applications that require 1.0 (listed as TLSv1) or even SSLv3
~Jennifer Jessup