upgrade 2.2 to 2.3, diffie-hellman, ssl_min_protocol

[tai74 at vfemail.net]

hi sorry if question was asked already. Was reading
https://wiki2.dovecot.org/Upgrading/2.3

first I'm confused on diffie hellman parameters file. I never set up  
ssl-parameters.dat before (should i have? do I have one that was  
automatically made for me by dovecot?)

Do I need to make a fresh dh.pem? The upgrade doc tells how to convert  
ssl-parameters.dat but how to make a new one?

other question is if I copy ssl_min_protocol from example config into  
my existing config is that enough? do experts on this list recommend  
any tweaks that increase client requirements more than dovecot  
developers are comfortable with but will ensure more secure protocol  
usage?


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