I don't know why my post was I quess deleted.
So from the beginning. I made installation of SD Plus v9.0. But I had to make reinstallation. Before I did I had working properly e-mail settings. After installation when setting e-mail account in Admin / E-mail account settings or something like that (I have in Polish :) ) I'm typing the same settings creditientials and so on and I have something like this when I want to use pop3s or imaps
That It cannot find the proper certifcate please set trusted/self signed certificate.
It's strange because I change port after that from pop3 or imap without ssl and the same issue.
What's wrong ? Is it any internal bug or what?