Trouble configuring managesive plugin for roundcube

[Christian Kivalo]

> I added “login” to my auth_mechanisms line in
> /etc/dovecot/conf.d/10-auth.conf. That line already looked like
> auth_mechanisms = plain
> 
> This is what the line looks like now: auth_mechanisms = plain login
> 
> I restarted dovecot and it still is not advertising anything after
> “SASL” in the sieve log file. See below:
> 
> [10-Jul-2022 16:33:27 -0600]: <4d9b66la> S: "NOTIFY" "mailto"
> [10-Jul-2022 16:33:27 -0600]: <4d9b66la> S: "SASL" ""
> [10-Jul-2022 16:33:27 -0600]: <4d9b66la> S: "STARTTLS"
> [10-Jul-2022 16:33:27 -0600]: <4d9b66la> S: "VERSION" "1.0"
> [10-Jul-2022 16:33:27 -0600]: <4d9b66la> S: OK "Dovecot (Ubuntu) 
> ready."
> [10-Jul-2022 16:33:27 -0600]: <4d9b66la> C: STARTTLS
> [10-Jul-2022 16:33:27 -0600]: <4d9b66la> S: OK "Begin TLS negotiation 
> now."
> [10-Jul-2022 16:33:30 -0600]: <4d9b66la> C: LOGOUT
> [10-Jul-2022 16:33:30 -0600]: <4d9b66la> S:
> ????Y8h#u??Lu?u?V2??N[?˴?+)u?????F?'{ֺ?G?r?iS??pݥ??D}?????
> [10-Jul-2022 16:33:30 -0600]: <4d9b66la> S: 
> ?>??0??SxfXC%]c?|?y?"w???K_ޕ???N
> ?.?c? ??_D?r???ǿ?r??w??#?/j?l/Wu?=.I^????~??y??(-n?6]!a??;?E?l??qn?j
> [10-Jul-2022 16:33:30 -0600]: <4d9b66la> S:
> ?.e???i8p?{Ur"???3GZ?Cž??7??U)s?;,c?6????HY??B?ڑB.g=TtAk?dq???nV?i
>                    ?BG2D???7?hܖQTl?)G??9??W?????M›^??
> ??D&?䢀rQ???2E?pn?Ez?????䉉i?                       @1??փiC???=???W?M\
> 
> `?]?}?D$`?:???^?/K???5?aB?c??ar)?l at C??X?ٹ?!J???k??"/1?r???w?_??@?p??w
> )R?d??o????k*?*?????
>                              i?O?i%S?l^?o2?H
> [10-Jul-2022 16:33:30 -0600]: <4d9b66la> S:
> 5?7?x??w?z"??hu4?E??:?/?F(d?;?򵂒?i??"??5??G,5????E?C?MS????
> L???*??*???LO?D?? J?l???ځ?
> 
> ??IN??v?fR?5t?:???SG?>{mY??D?˱????t?Rj?w?#
> 
>           ??n??[?S?
> 
>                    V4O?z?=.ܰې??uA?ھ????9?τ???c??oE?;LBOg??Ql'w?=
> [10-Jul-2022 16:33:30 -0600]: <4d9b66la> S: ?&???C/_??*??????|.??$O?~?
> ??5?"????縉??
> ?r??0~?+~????B
>              ??5)]cZ?Z?򔠛t??D??????-?dZ??M?z??2TɉOp?q?o?T?3?`'????g??6
> [10-Jul-2022 16:33:30 -0600]: <4d9b66la> S: m??]~5???
> [10-Jul-2022 16:33:30 -0600]: <4d9b66la> S:
> 
> And once again the line from my mail.log file.
> 
> Jul 10 22:33:27 mail dovecot: managesieve-login: Disconnected (no auth
> attempts in 0 secs): user=<>, rip=10.116.0.3, lip=10.116.0.2, TLS,
> session=<7VswBnvjXuIKdAAD>
> 
> Any further suggestions? Why do you suppose that the auth mechanisms
> are not being advertised?
The auth mechanisms are not shown because you access from a remote host, 
have STARTTLS available and "disable_plaintext_auth = yes" set. The auth 
mechanisms will be shown after STARTTLS.
This is described here 
https://wiki.dovecot.org/Pigeonhole/ManageSieve/Troubleshooting



One more thing comes to mind regarding the ssl options in the 
managesieve plugin config. Do you use a self signed cert in dovecot?

One more thing you could try, in your managesieve plugin config.inc.php

remove this section:
$config['managesieve_conn_options'] = array(
         'ssl' => array(
             'verify_peer'       => false,
             'allow_self_signed' => true,
         ),
     );

add this section:
$config['managesieve_conn_options'] = [
     'ssl'         => [
     'verify_peer'  => false,
     'peer_name' => 'change to the hostname from dovecots ssl 
certificate',
     ],
];

add in there, when using self-signed cert
  'allow_self_signed' => true,

-- 
  Christian Kivalo