Version 0.21 is posted

Thank you!

then, did It again by running:

cd mailinabox
git fetch
git pull
cd mailinabox
git checkout
setup/start.sh

The arrived to the need to run:

sudo apt-get -y purge python3-openssl
sudo rm -rf /usr/local/lib/python3.4/dist-packages/{OpenSSL,cryptography}*
sudo pip3 install pyOpenSSL
sudo mailinabox

At the end, following error reported (even everything looks Ok! at the admin panel):

updated DNS: OpenDKIM configuration
web updated
Traceback (most recent call last):
  File "management/ssl_certificates.py", line 807, in <module>
    provision_certificates_cmdline()
  File "management/ssl_certificates.py", line 450, in provision_certificates_cmdline
    status = provision_certificates(env, agree_to_tos_url=agree_to_tos_url, logger=my_logger, force_domains=force_domains, show_extended_problems=show_extended_problems)
  File "management/ssl_certificates.py", line 272, in provision_certificates
    import acme.messages
  File "/usr/local/lib/python3.4/dist-packages/acme/messages.py", line 4, in <module>
    from acme import challenges
  File "/usr/local/lib/python3.4/dist-packages/acme/challenges.py", line 9, in <module>
    import OpenSSL
ImportError: No module named 'OpenSSL'
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Your Mail-in-a-Box is running.
Please log in to the control panel for further instructions at:

Is that last something to be worried about? Thanks in advance!