I download and install ManageEngine ServiceDesk Plus v9.0. I Made one installation of my fedora server and integrated with MySQL. I manage to configure mailbox for our service to and connect it in administration panel. 

Unfortunately I had reinstall my servicedesk to use postgresql database. 

After installation I have problem with conifugurating my mailbox. 

Strange because I use the same creditentials, I choose IMAPS and it gave me a notice

That It can't find the proper certificate please set  trusted/self signed certificate 

Strange because I have the same notice when I change to IMAP or POP3 without ssl. And the same info. Is it a Bug or what and why it doesn't support trusted certificate ?