Email Security In Pleask Chipter Suite / TLS / SSL

Hi,
I AM new on Plesk for VPS but I AM currently looking to buy a VPS with Plesk 12 Web Admin on Centos6

I AM not already using Plesk.
My question is:

I see for incoming mail postfix is the default and dovecot is the default for out coming email.
I AM using webuzo webpanel right now who use Exim as default inbox and dovecot for outbox and I can access to the exim configuration for set secure chipher suite.

In Plesk all is set by Plesk I Mean default settings of postfix and dovecot will be...

Email Security In Pleask Chipter Suite / TLS / SSL