How to enable pop3 in YunoHost?

I have installed pop3d
apt-get install dovecot-pop3d

modified /etc/dovecot/dovecot.conf
protocols = imap sieve pop3s pop3
added these lines
protocol pop3 { login_executable = /usr/lib/dovecot/pop3-login mail_executable = /usr/lib/dovecot/pop3 }
(not sure that one was useful)

I have also opened port 110 and 995 in the firewall section.

and finaly restart dovecot
service dovecot restart

It works, but did I miss ( /or add) something important (/useless)?

any help would be greatly appreciated