greetings!

i am exploring how to configure encrypted emails via iredmail and thunderbird.
i have created an ssl certificate on my server for nginx and iredmail also has one.

i followed the guidelines for mail encryption with thunderbird here (http://lifehacker.com/180878/how-to-encrypt-your-email) -
yet i am confused.. openPGP encryption appears to be a 'private' method of encryption that is separate from the SSL method..
so.. can i use openPGP directly with iredmail's apps?
do i need to?

i have created openPGP keys in thunderbird for the accounts i am using.. i am unsure how to connect this with iredmail directly.

when i enable encrypted passwords in thunderbird i see an error message that the pop3 account is not configured to use encryption. i do have the 'connection security' option set to SSL/TLS in thunderbird.. does this offer any type of encryption?

what do i need to do?

(i did already ask a similar question months ago here.. the situation is slightly different now and i never got this working previously).

thanks

==== Required information ====
- iRedMail version: 0.8.3
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: Centos 6.3
- Related log if you're reporting an issue:
====