dovecot - May 2020 - Can't connect to Managesieve Server - what´s wrong?

Hi, please excuse my bad english language. But I am not a native
speaker. I have installed dovecot including sieve and managesieve on a
ubuntu 18.04 lts. When I try to access the filter with roundcube (from
another vm) I get the error message "Cannot connect to
Managesieve-Server". If I try a "telnet myserver.dynvpn.de 4190"
from
the roundcube-vm I get Trying 188.194.95.63... Connected to
myserver.dynvpn.de. Escape character is '^]'. "IMPLEMENTATION"
"Dovecot
(Ubuntu) Pigeonhole" "SIEVE" "fileinto reject envelope
encoded-character
vacation subaddress comparat or-i;ascii-numeric relational regex
imap4flags copy include variables body enoti fy environment mailbox date
index ihave duplicate mime foreverypart extracttext imapsieve
vnd.dovecot.imapsieve" "NOTIFY" "mailto"
"SASL" "" "STARTTLS" "VERSION"
"1.0" OK "Dovecot (Ubuntu) ready." So I think that dovecot
managesieve
is running. In /var/log/syslog I get with sieve: ... May 13 23:56:04
firstmail dovecot: imap(debian at firstmail.locallan): Debug: Module
loaded: /usr/lib/dovecot/modules/lib95_imap_sieve_plugin.so ... When I
try with telnet I get: ... May 14 00:00:30 firstmail dovecot:
managesieve-login: Debug: SSL: elliptic curve secp384r1 will be used for
ECDH and ECDHE key exchanges May 14 00:00:30 firstmail dovecot:
managesieve-login: Debug: SSL: elliptic curve secp384r1 will be used for
ECDH and ECDHE key exchanges ... What can I do to get connect from
Roundcube to dovecot-managemsieve? Thank you! Tony
---> 20-imap.conf protocol imap { mail_plugins = $mail_plugins
imap_sieve } ---> 20-lmtp.conf protocol lmtp { postmaster_address
administrator at locallan # required mail_plugins = $mail_plugins sieve }
---> 20-managesieve.conf protocols = $protocols sieve service
managesieve-login { inet_listener sieve { port = 4190 } } service
managesieve { # Max. number of ManageSieve processes (connections)
process_limit = 1024 } protocol sieve { } ---> 90-sieve.conf plugin {
sieve_plugins = sieve_imapsieve sieve_extprograms sieve_before
/var/vmail/sieve/global/spam-global.sieve sieve
file:/var/vmail/sieve/%u;active=/var/vmail/sieve/%u/active-script.sieve
sieve_default = /var/vmail/sieve/default/default.sieve sieve_global
/var/vmail/sieve/global/ imapsieve_mailbox1_name = Spam
imapsieve_mailbox1_causes = COPY imapsieve_mailbox1_before
file:/var/vmail/sieve/global/report-spam.sieve imapsieve_mailbox2_name *
imapsieve_mailbox2_from = Spam imapsieve_mailbox2_causes = COPY
imapsieve_mailbox2_before file:/var/vmail/sieve/global/report-ham.sieve
sieve_pipe_bin_dir /usr/bin sieve_global_extensions = +vnd.dovecot.pipe }
--->
90-sieve-extprograms.conf plugin { }

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On 2020-05-14 00:14, Anton Blau wrote:
> What can I do to get connect from Roundcube to dovecot-managemsieve?
if roundcube is installed on same server as dovecot then disable ssl in 
roundcube managesive plugin as same way for imap and submission/smtps

Am 14.05.2020 um 00:22 schrieb Benny Pedersen:
> On 2020-05-14 00:14, Anton Blau wrote:
>
>> What can I do to get connect from Roundcube to dovecot-managemsieve?
>
> if roundcube is installed on same server as dovecot then disable ssl
> in roundcube managesive plugin as same way for imap and submission/smtps
>
>
Thank you for your very fast answer.

There are two virtual machines:

1. dovocot (postfix, rspamd)

2. roundcube