Fix email folder on 5.7.1

When I configure a mail folder on a 5.7.1 using IMAPS (which is supposed to be ok), it displays an error:

Connection errorCouldn't connect using socket factory class javax.net.ssl.SSLSocketFactory to host, port: imap.gmail.com, 993; Exception: java.lang.IllegalArgumentException: SSL 

If I try to configure it to use IMAP, it tries to fetch emails for a long time and finally gives a time out.