How to specify port in managesieve configuration?

[joea]

Roundcube seems to trying port 2000 to access dovecot managesieve and fails, as that is not configured.

/etc/roundcubemail/managesieve.inc.php says it is optional to specify the port, but, there is no example of how to specify the port.

Examples on the internet suggest this should work, but apparently does not.

$config['managesieve_port'] = 4190;
$config['managesieve_host'] = 'localhost';

How is it to be done?

Edit/Modify:

Apparently, like this:

$config['managesieve_port'] = 4190;
$config['managesieve_host'] = 'localhost:4190';

No idea if the first line is really necessary, I think not, but, not inclined to test it at the moment.

[joea]

Seem I am specifying the port incorrectly or it is not being honored.

I changed the port managesieve listens on to port 2000 and roundcube connected without complaint.

What am I doing wrong?

[Dmitry42]

"ROUNDCUBE PATH"/plugins/managesieve/config.inc.php

here is

// managesieve server port. When empty the port will be determined automatically
// using getservbyname() function, with 4190 as a fallback.
$config['managesieve_port'] = null;

// managesieve server address, default is localhost.
// Replacement variables supported in host name:
// %h - user's IMAP hostname
// %n - http hostname ($_SERVER['SERVER_NAME'])
// %d - domain (http hostname without the first part)
// For example %n = mail.domain.tld, %d = domain.tld
$config['managesieve_host'] = 'localhost';

and /etc/dovecot/conf.d/20-managesieve.conf

service managesieve-login {
  inet_listener sieve {
    address = 127.0.0.1
    port = 4190
  }