I' using Zimbra Collaboration Suite 5.0 RC 2 for Debian Etch.

after check "clear text password" at Global Setting --> POP3 (in AdminUI), Now i can't display ZimbraAdmin anymore.

My firefox say : Firefox can't connect securely to mail.xxx.com because the site uses a security protocol which isn't enabled

Is it a bug, or i'm doing something wrong?

Please help....