[Evolution] Port 993 and SSL/TLS and legitimacy in plain text at the same time

["enero99 arcor de" <enero99 arcor de>]

Hello,
my provider (mail.de) supports on March only port 993 with SSL/TLS and 
legitimacy in plain text (only plain text). In Evolution, I can only set 
port 993 and SSL/TLS. But then under legitimacy plain text is not available.

What can I do?

Excuse my bad English.

greeting
enero99