Dovecot problems after update to i-mscp 1.1.15

    After update to 1.1.15, I notice that rouncube was displaying error "connection to storage server failed", I check the logs and I found " s=deferred
    (temporary failure. Command output: doveconf: Fatal: Error in configuration file /etc/dovecot/dovecot.conf line 83: Unknown setting: ss l_protocols ) line 83 is ", the line is "ssl_protocols = !SSLv2 !SSLv3 ".


    Solution, comment that line and restart dovecot service.


    The issue is about # Prohibit usage of older and deprecated SSL protocols mostly due to the POODLE
    # vulnerability CVE-2014-3566


    ssl_protocols = !SSLv2 !SSLv3 parameter is only available in dovecot > 2.1


    In my scenario, Ubuntu 12.04LTS, dovecot version 2.0.19

    Hi Delta04
    you could try the following guidance.


    For Dovecot 2, edit /etc/dovecot/conf.d/10-ssl.conf to add the
    below lines and then restart Dovecot.

    Code
    1. ssl_cipher_list = ALL:!LOW:!SSLv2:!SSLv3:!EXP:!aNULL


    source https://zmap.io/sslv3/servers.html#dovecot