Dovecot 2.1.7 random login fails

[Dario Meloni]

On Wed, 18 Feb 2015 09:38:22 +0000, Dario Meloni wrote:

>> did you've verified that the file exists and has a reasonable file
>> size?
> 
> The file in question is actually a unix socket that I guess is used to
> refresh the SSL data from the main privileged process.
> I don't know which process is actually logging the error, but the ssl-
> params file is root owned and is readable and writable by everyone.

No one has any idea why the ssl-param socket might not be working?

I tried also different distributions (centos, ubuntu, debian) and the 
dovecot repositories (to try the latest stable, 2.2) and I routinely get 
that error.