1. Go to File > Preferences.
2. Click the Advanced radial button.
3. Click the Accounts tab.
4. Set Method to Plain Text and the Secure box to SSLv3.
5. From the Account drop-down, choose SMTP.
6. Set the Method drop-down to Plain Text and the Secure drop-down to SSLv3.
7. From the Account drop-down, choose IMSP.
8. Set to Method drop-down to Plain Text and the Secure drop-down to SSLv3.
9. From the Account drop-down choose LDAP.
10. Set the Method drop-down to Anonymous.
11. Click OK. You have successfully configured Mulberry to be secure.