There is no error in the server logs. I checked those particular folders on the server and they don’t seems to have anything special about them, like permission or etc.

Yes, calling STATUS on those particular folders returns the status. The folders can be opened and they have emails in them so nothing special about those folders.

# 2.3.5 (513208660): /etc/dovecot/dovecot.conf # OS: Linux 3.10.0-957.21.3.el7.x86_64 x86_64 CentOS Linux release 7.6.1810 (Core) # Hostname: mail.HIDDEN auth_cache_size = 1 M auth_mechanisms = plain login auth_username_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$-=?^_{}~./@+%" disable_plaintext_auth = no first_valid_uid = 201 lda_mailbox_autocreate = yes lmtp_rcpt_check_quota = yes lmtp_save_to_detail_mailbox = yes lmtp_user_concurrency_limit = 4 mail_access_groups = dovecot mail_plugins = quota quota_clone zlib fts fts_solr mail_prefetch_count = 20 maildir_very_dirty_syncs = yes namespace inbox { inbox = yes location = mailbox Archive { auto = create special_use = \Archive } mailbox Archives { auto = no special_use = \Archive } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { auto = no special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } mailbox spam { auto = subscribe special_use = \Junk } prefix = INBOX. separator = . type = private } passdb { args = /usr/local/cpanel/etc/dovecot/cpauthd-dict.conf driver = dict result_failure = return-fail } plugin { acl = vfile:cache_secs=86400 fts = solr fts_solr = url=http://#hidden_use-P_to_show#@127.0.0.1:8984/solr/dovecot/ quota_exceeded_message = Mailbox is full / Blocks limit exceeded / Inode limit exceeded } protocols = lmtp imap pop3 service auth { unix_listener auth-client { mode = 0666 } } service config { vsz_limit = 2 G } service dict { unix_listener dict { group = dovecot mode = 0660 } } service imap-login { client_limit = 500 inet_listener imap { address = *,:: } inet_listener imaps { address = *,:: } process_limit = 50 process_min_avail = 2 service_count = 0 vsz_limit = 128 M } service imap { process_limit = 512 vsz_limit = 512 M } service lmtp { client_limit = 1 process_limit = 500 unix_listener lmtp { group = mail mode = 0660 user = mailnull } vsz_limit = 512 M } service managesieve-login { client_limit = 500 process_limit = 50 process_min_avail = 2 service_count = 0 vsz_limit = 128 M } service managesieve { process_limit = 512 vsz_limit = 512 M } service pop3-login { client_limit = 500 inet_listener pop3 { address = *,:: } inet_listener pop3s { address = *,:: } process_limit = 50 process_min_avail = 2 service_count = 0 vsz_limit = 128 M } service pop3 { process_limit = 512 vsz_limit = 512 M } service quota-status { executable = quota-status -p postfix unix_listener quota-status { mode = 0666 } } service stats { client_limit = 2000 unix_listener stats-writer { mode = 0666 } } ssl_cert = </etc/dovecot/ssl/dovecot.crt ssl_cipher_list = ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:!DSS ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { driver = prefetch } userdb { args = /usr/local/cpanel/etc/dovecot/cpauthd-dict.conf driver = dict } protocol imap { imap_capability = +NAMESPACE imap_idle_notify_interval = 24 mins imap_logout_format = in=%i, out=%o, bytes=%i/%o mail_max_userip_connections = 20 mail_plugins = acl quota imap_quota zlib imap_zlib quota_clone virtual fts fts_solr namespace sent { hidden = yes list = no location = virtual:/usr/local/cpanel/etc/dovecot/virtual/sent:INDEX=~/mail/virtual/%u/sent prefix = sent separator = . } namespace spam { hidden = yes list = no location = virtual:/usr/local/cpanel/etc/dovecot/virtual/spam:INDEX=~/mail/virtual/%u/spam prefix = spam separator = . } } protocol pop3 { mail_max_userip_connections = 3 mail_plugins = quota quota quota_clone virtual zlib namespace sent { hidden = yes list = no location = virtual:/usr/local/cpanel/etc/dovecot/virtual/sent:INDEX=~/mail/virtual/%u/sent prefix = sent separator = . } namespace spam { hidden = yes list = no location = virtual:/usr/local/cpanel/etc/dovecot/virtual/spam:INDEX=~/mail/virtual/%u/spam prefix = spam separator = . } pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s, bytes=%i/%o pop3_uidl_format = UID%u-%v } protocol lmtp { mail_plugins = quota quota_clone zlib postmaster_address = root quota_full_tempfail = yes } protocol lda { mail_plugins = quota quota_clone zlib postmaster_address = root quota_full_tempfail = yes } local_name mail.HIDDEN www.mail.hidden { ssl_cert = </etc/dovecot/ssl/dovecot.crt ssl_key = # hidden, use -P to show it }

local_name *.HIDDEN HIDDEN { ssl_cert = </var/cpanel/ssl/domain_tls/HIDDEN/combined ssl_key = # hidden, use -P to show it }

From: Timo Sirainen <timo@sirainen.com> Sent: Tuesday, July 16, 2019 10:59 AM To: Emil Kalchev <ekalchev@hotmail.com> Cc: Dovecot Mailing List <dovecot@dovecot.org> Subject: Re: Unexpected result from LIST EXTENDED command

On 16 Jul 2019, at 9.51, Emil Kalchev via dovecot <dovecot@dovecot.org<mailto:dovecot@dovecot.org>> wrote:

I am executing this command below to dovecot-2.3.5-6.cp1178.x86_64 server

Notice that some status responses are missing (For folders INBOX.Archive, INBOX.spam.&-BD0EOQQ9BDkEPQ-). I wonder If this is a bug or working as expected

In rfc5819 there is this:

If the server runs into unexpected problems while trying to look up the STATUS information, it MAY drop the corresponding STATUS reply. In such a situation, the LIST command would still return a tagged OK reply.

May be that is the reason for this response? Is it possible to find more details in server logs why STATUS is missing?

Do you see any errors logged? Does it work if you ask with STATUS command directly those folders? What's your doveconf -n?

As a workaround (if this turns out to be a Dovecot bug) -

• you could use STATUS instead.

It would be several commands, one per folder, so you'd want to send them pipelined for performance.

I've done this before in an email app I worked on and haven't seen any issues with Dovecot or any other server (e.g. Gmail, Cyrus, Fastmail ...)

-- K

On Tue, Jul 16, 2019, at 11:41 AM, Emil Kalchev via dovecot wrote:

There is no error in the server logs. I checked those particular folders on the server and they don’t seems to have anything special about them, like permission or etc.

Yes, calling STATUS on those particular folders returns the status. The folders can be opened and they have emails in them so nothing special about those folders.

# 2.3.5 (513208660): /etc/dovecot/dovecot.conf

# OS: Linux 3.10.0-957.21.3.el7.x86_64 x86_64 CentOS Linux release 7.6.1810 (Core)

# Hostname: mail.HIDDEN

auth_cache_size = 1 M

auth_mechanisms = plain login

auth_username_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$-=?^_{}~./@+%"

disable_plaintext_auth = no

first_valid_uid = 201

lda_mailbox_autocreate = yes

lmtp_rcpt_check_quota = yes

lmtp_save_to_detail_mailbox = yes

lmtp_user_concurrency_limit = 4

mail_access_groups = dovecot

mail_plugins = quota quota_clone zlib fts fts_solr

mail_prefetch_count = 20

maildir_very_dirty_syncs = yes

namespace inbox {

inbox = yes

location =

mailbox Archive {

auto = create

special_use = \Archive

}

mailbox Archives {

auto = no

special_use = \Archive

}

mailbox Drafts {

auto = subscribe

special_use = \Drafts

}

mailbox Sent {

auto = subscribe

special_use = \Sent

}

mailbox "Sent Messages" {

auto = no

special_use = \Sent

}

mailbox Trash {

auto = subscribe

special_use = \Trash

}

mailbox spam {

auto = subscribe

special_use = \Junk

}

prefix = INBOX.

separator = .

type = private

}

passdb {

args = /usr/local/cpanel/etc/dovecot/cpauthd-dict.conf

driver = dict

result_failure = return-fail

}

plugin {

acl = vfile:cache_secs=86400

fts = solr

fts_solr = url=http://#hidden_use-P_to_show#@127.0.0.1:8984/solr/dovecot/

quota_exceeded_message = Mailbox is full / Blocks limit exceeded / Inode limit exceeded

}

protocols = lmtp imap pop3

service auth {

unix_listener auth-client {

mode = 0666

}

}

service config {

vsz_limit = 2 G

}

service dict {

unix_listener dict {

group = dovecot

mode = 0660

}

}

service imap-login {

client_limit = 500

inet_listener imap {

address = *,::

}

inet_listener imaps {

address = *,::

}

process_limit = 50

process_min_avail = 2

service_count = 0

vsz_limit = 128 M

}

service imap {

process_limit = 512

vsz_limit = 512 M

}

service lmtp {

client_limit = 1

process_limit = 500

unix_listener lmtp {

group = mail

mode = 0660

user = mailnull

}

vsz_limit = 512 M

}

service managesieve-login {

client_limit = 500

process_limit = 50

process_min_avail = 2

service_count = 0

vsz_limit = 128 M

}

service managesieve {

process_limit = 512

vsz_limit = 512 M

}

service pop3-login {

client_limit = 500

inet_listener pop3 {

address = *,::

}

inet_listener pop3s {

address = *,::

}

process_limit = 50

process_min_avail = 2

service_count = 0

vsz_limit = 128 M

}

service pop3 {

process_limit = 512

vsz_limit = 512 M

}

service quota-status {

executable = quota-status -p postfix

unix_listener quota-status {

mode = 0666

}

}

service stats {

client_limit = 2000

unix_listener stats-writer {

mode = 0666

}

}

ssl_cert = </etc/dovecot/ssl/dovecot.crt

ssl_cipher_list = ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:!DSS

ssl_dh = # hidden, use -P to show it

ssl_key = # hidden, use -P to show it

userdb {

driver = prefetch

}

userdb {

args = /usr/local/cpanel/etc/dovecot/cpauthd-dict.conf

driver = dict

}

protocol imap {

imap_capability = +NAMESPACE

imap_idle_notify_interval = 24 mins

imap_logout_format = in=%i, out=%o, bytes=%i/%o

mail_max_userip_connections = 20

mail_plugins = acl quota imap_quota zlib imap_zlib quota_clone virtual fts fts_solr

namespace sent {

hidden = yes

list = no

location = virtual:/usr/local/cpanel/etc/dovecot/virtual/sent:INDEX=~/mail/virtual/%u/sent

prefix = sent

separator = .

}

namespace spam {

hidden = yes

list = no

location = virtual:/usr/local/cpanel/etc/dovecot/virtual/spam:INDEX=~/mail/virtual/%u/spam

prefix = spam

separator = .

}

}

protocol pop3 {

mail_max_userip_connections = 3

mail_plugins = quota quota quota_clone virtual zlib

namespace sent {

hidden = yes

list = no

location = virtual:/usr/local/cpanel/etc/dovecot/virtual/sent:INDEX=~/mail/virtual/%u/sent

prefix = sent

separator = .

}

namespace spam {

hidden = yes

list = no

location = virtual:/usr/local/cpanel/etc/dovecot/virtual/spam:INDEX=~/mail/virtual/%u/spam

prefix = spam

separator = .

}

pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s, bytes=%i/%o

pop3_uidl_format = UID%u-%v

}

protocol lmtp {

mail_plugins = quota quota_clone zlib

postmaster_address = root

quota_full_tempfail = yes

}

protocol lda {

mail_plugins = quota quota_clone zlib

postmaster_address = root

quota_full_tempfail = yes

}

local_name mail.HIDDEN www.mail.hidden {

ssl_cert = </etc/dovecot/ssl/dovecot.crt

ssl_key = # hidden, use -P to show it

}

local_name *.HIDDEN HIDDEN {

ssl_cert = </var/cpanel/ssl/domain_tls/HIDDEN/combined

ssl_key = # hidden, use -P to show it

}

*From:* Timo Sirainen <timo@sirainen.com> *Sent:* Tuesday, July 16, 2019 10:59 AM *To:* Emil Kalchev <ekalchev@hotmail.com> *Cc:* Dovecot Mailing List <dovecot@dovecot.org> *Subject:* Re: Unexpected result from LIST EXTENDED command

On 16 Jul 2019, at 9.51, Emil Kalchev via dovecot <dovecot@dovecot.org> wrote:

...

...

I am executing this command below to dovecot-2.3.5-6.cp1178.x86_64 server

...

...

Notice that some status responses are missing (For folders INBOX.Archive, INBOX.spam.&-BD0EOQQ9BDkEPQ-). I wonder If this is a bug or working as expected

...

...

In rfc5819 there is this:

...

...

If the server runs into unexpected problems while trying to look up the STATUS information, it MAY drop the corresponding STATUS reply. In such a situation, the LIST command would still return a tagged OK reply.

...

...

May be that is the reason for this response? Is it possible to find more details in server logs why STATUS is missing?

Do you see any errors logged? Does it work if you ask with STATUS command directly those folders? What's your doveconf -n?