Roundcube "Connection to IMAP server failed"

In 1.5 version, I have updated Roundcube config file to upstream. The only significant change I see is line 44 : $config['default_host'] = '%t'; instead of $config['default_host'] = 'localhost';

The config file is located here: /var/www/roundcube/config/config.inc.php

Maybe if you change it back to localhost instead of %t that will fixe the issue…

I also made a branch with the change. GitHub - YunoHost-Apps/roundcube_ynh at fix

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