I had a Dovecot and Roundcube server installed on the same machine, and Managesieve worked fine.
But I changed Rouncube to another server and I can't get managesieve to connect.
I already modified the managesieve configuration file indicating the IP of the Dovecot server, but in the rouncube log I see that it tries to connect to localhost, I don't understand...
Unable to connect to managesieve on localhost:4190 in /var/wwwebmail/html/plugins/managesieve/lib/Roundcube/rcube_sieve_engine.php on line 223