Re: Panic: file imap-sieve-storage.c: line 216 (imap_sieve_add_mailbox_event): assertion failed: (ismt->src_box == NULL || ismt->src_box == src_box)

26 Jan 2026

      On 2026-01-26 03:41, Stephan Bosch wrote:
...
Hi,
I cannot reproduce any of this so far:
Maybe try again with  log_debug=category=imap or category=sieve
And provide all config (dovecot -n) and the Sieve scripts involved.
Regards,
Stephan
Hi,
thanks for your reply. I changed log_debug and am waiting for the next
Panic.
Config and sieve scripts below.
doveconf -n
2.4.2-2+debian13 (0962ed2104): /etc/dovecot/dovecot.conf
Pigeonhole version 2.4.2-2+debian13 (767418c3)
OS: Linux 6.12.0-sec-svcs.kvm x86_64 Debian 13.3 ext4
Hostname: uschi.sec-svcs.eu
dovecot_config_version = 2.4.2
acl_driver = vfile
auth_mechanisms = plain
default_vsz_limit = 2048M
deliver_log_format = msgid=%{msgid}, size=%{size}, from=%{from},
subject=%{subject}, envelope from=%{from_envelope}, envelope
to=%{to_envelope}, delivery time=%{delivery_time}ms, lmtp session
time=%{session_time}ms, status=%{message}, storage_id=%{storage_id}
dovecot_storage_version = 2.4.2
first_valid_gid = 5000
first_valid_uid = 5000
fts_autoindex = yes
fts_autoindex_max_recent_msgs = 999
fts_search_add_missing = yes
imap_client_workarounds {
tb-extra-mailbox-sep = yes
tb-lsub-flags = yes
}
imap_logout_format = in=%{input} out=%{output} appended=%{appended}
deleted=%{deleted} expunged=%{expunged} autoexpunged=%{autoexpunged}
trashed=%{trashed} hdr_count=%{fetch_hdr_count}
hdr_bytes=%{fetch_hdr_bytes} body_count=%{fetch_body_count}
body_bytes=%{fetch_body_bytes}
last_valid_gid = 5000
last_valid_uid = 5000
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
lmtp_user_concurrency_limit = unlimited
log_debug = category=imap or category=sieve
mail_access_groups = vmail
mail_always_cache_fields = date.save
mail_attachment_detection_options = add-flags
"content-type=!application/signature"
mail_driver = maildir
mail_gid = vmail
mail_path = /srv/mail/%{user | lower}/Maildir
mail_plugins {
notify = yes
mail_log = yes
fts = yes
fts_solr = yes
virtual = yes
acl = yes
quota = yes
quota_clone = yes
}
mail_server_admin = mailto:postmaster@sec-svcs.eu
mail_server_comment = sec-svcs.eu mail hosting
mail_uid = vmail
postmaster_address = postmaster@sec-svcs.eu
protocols = imap pop3 lmtp sieve
quota_status_nouser = DUNNO
quota_status_overquota = 552 5.2.2 Mailbox is full
quota_status_success = DUNNO
sieve_extensions {
fileinto = yes
reject = yes
envelope = yes
encoded-character = yes
vacation = yes
subaddress = yes
comparator-i;ascii-numeric = yes
relational = yes
regex = yes
imap4flags = yes
copy = yes
include = yes
body = yes
variables = yes
enotify = yes
environment = yes
mailbox = yes
date = yes
index = yes
ihave = yes
duplicate = yes
mime = yes
foreverypart = yes
extracttext = yes
vnd.dovecot.debug = yes
editheader = yes
}
sieve_global_extensions {
vnd.dovecot.pipe = yes
vnd.dovecot.environment = yes
}
sieve_pipe_bin_dir = /srv/sieve/imapsieve
sieve_plugins {
sieve_imapsieve = yes
sieve_extprograms = yes
}
sql_driver = mysql
ssl = required
syslog_facility = local5
verbose_proctitle = yes
mysql 10.1.1.50 {
dbname = mailadmin
password = # hidden, use -P to show it
user = mailuser
}
passdb sql {
default_password_scheme = SHA512-CRYPT
query = SELECT username AS user, password AS password, homedir AS
userdb_home, maildir AS userdb_mail_path, CONCAT('*:bytes=', quota) AS
userdb_quota_storage_size, uid AS userdb_uid, gid AS userdb_gid FROM
mailbox WHERE username = '%{user | lower}' AND active = '1' AND (
access_restriction = 'ALL' OR LOCATE( '%{protocol | upper}',
access_restriction ) > 0 )
}
userdb sql {
iterate_query = SELECT username AS user FROM mailbox
query = SELECT homedir AS home, maildir AS mail_path,
CONCAT('*:bytes=', quota) AS quota_storage_size, uid, gid FROM mailbox
WHERE username = '%{user | lower}'
}
namespace inbox {
inbox = yes
separator = /
subscriptions = yes
type = private
quota_storage_grace = 100M
mailbox Drafts {
auto = subscribe
special_use = "\\Drafts"
}
mailbox Spam {
auto = subscribe
autoexpunge = 15d
special_use = "\\Junk"
}
mailbox Trash {
auto = subscribe
special_use = "\\Trash"
quota_storage_extra = 1024M
}
mailbox Sent {
auto = subscribe
special_use = "\\Sent"
quota_storage_extra = 1024M
}
mailbox Archives {
auto = subscribe
special_use = "\\Archive"
}
mailbox virtual/All {
special_use = "\\All"
}
}
namespace virtual {
mail_path = /srv/mail/%{user | lower}/virtual
hidden = no
inbox = no
list = children
prefix = virtual/
separator = /
subscriptions = yes
type = private
}
namespace others {
mail_driver = maildir
mail_index_private_path = ~/Maildir/shared/%{owner_user}
mail_path = %{owner_home}/Maildir
list = children
prefix = shared/$user/
separator = /
subscriptions = no
type = shared
}
protocol !indexer-worker {
mail_vsize_bg_after_count = 0
}
maildir {
copy_with_hardlinks = yes
}
service imap-login {
process_min_avail = 4
restart_request_count = unlimited
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
ssl = yes
}
}
service pop3-login {
inet_listener pop3 {
port = 110
}
inet_listener pop3s {
port = 995
ssl = yes
}
}
service submission-login {
inet_listener submission {
}
inet_listener submissions {
}
}
service lmtp {
unix_listener /var/spool/postfix/private/dovecot-lmtp {
group = postfix
mode = 0666
user = postfix
}
}
service imap {
}
service pop3 {
}
service submission {
}
service auth {
unix_listener auth-userdb {
}
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0666
user = postfix
}
inet_listener karl_auth {
port = 12987
listen = 10.1.1.10
}
}
service auth-worker {
user = doveauth
}
service dict {
unix_listener dict {
group = vmail
mode = 0660
}
}
service quota-status {
client_limit = 1
executable = quota-status -p postfix
inet_listener quota-pf {
port = 11134
}
}
ssl_server {
alt_cert_file = /srv/le/imap.sec-svcs.eu_domain_ca_chain.ec.crt
alt_key_file = /srv/le/imap.sec-svcs.eu.ec.key
cert_file = /srv/le/imap.sec-svcs.eu_domain_ca_chain.crt
dh_file = /etc/dovecot/dh.pem
key_file = /srv/le/imap.sec-svcs.eu.key
}
protocol lda {
mail_plugins {
sieve = yes
quota = yes
fts = yes
fts_solr = yes
}
}
protocol imap {
mail_plugins {
imap_sieve = yes
imap_acl = yes
imap_filter_sieve = yes
}
}
protocol lmtp {
mail_plugins {
sieve = yes
quota = yes
fts = yes
fts_solr = yes
}
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
}
service managesieve {
}
dict_server {
dict quota {
driver = sql
sql_driver = mysql
mysql 10.1.1.50 {
dbname = mailserver
password = # hidden, use -P to show it
user = mailadmin
}
dict_map priv/quota/storage {
sql_table = quota
username_field = username
dict_map_value_field bytes {
type = uint
}
}
dict_map priv/quota/messages {
sql_table = quota
username_field = username
dict_map_value_field messages {
type = uint
}
}
}
dict acl {
driver = sql
sql_driver = mysql
mysql 10.1.1.50 {
dbname = mailserver
password = # hidden, use -P to show it
user = mailadmin
}
dict_map "shared/shared-boxes/user/$to/$from" {
sql_table = user_shares
dict_map_value_field dummy {
}
dict_map_key_field from_user {
value = $from
}
dict_map_key_field to_user {
value = $to
}
}
dict_map "shared/shared-boxes/anyone/$from" {
sql_table = anyone_shares
dict_map_value_field dummy {
}
dict_map_key_field from_user {
value = $from
}
}
}
}
acl_sharing_map {
dict proxy {
name = acl
}
}
quota "User quota" {
driver = count
storage_size = 20480M
quota_warning warn-95 {
quota_storage_percentage = 95
execute quota-warning {
args = 95 %{user}
}
}
quota_warning warn-80 {
quota_storage_percentage = 80
execute quota-warning {
args = 80 %{user}
}
}
}
service quota-warning {
executable = script /usr/local/bin/quota-warning.sh
user = dovecot
unix_listener quota-warning {
user = dovecot
}
}
quota_clone {
dict proxy {
name = quota
}
}
sieve_script personal {
active_path = /srv/sieve/%{user | lower}/.dovecot.sieve
driver = file
path = /srv/sieve/%{user | lower}
}
mailbox Spam {
sieve_script report-spam {
cause = copy append
path = /srv/sieve/imapsieve/report-spam.sieve
type = before
}
}
imapsieve_from Spam {
sieve_script report-ham {
cause = copy append
path = /srv/sieve/imapsieve/report-ham.sieve
type = before
}
}
sieve_script before {
path = /srv/sieve/before
type = before
}
These two are for rspamd and work for my user when using roundcube and
thunderbird on android..

report-spam.sieve:
require ["vnd.dovecot.pipe", "copy", "imapsieve", "environment",
"variables"];

if environment :matches "imap.user" "*" {
set "username" "${1}";
}
pipe :copy "learn-spam.sh" [ "${username}" ];

report-ham.sieve:
require ["vnd.dovecot.pipe", "copy", "imapsieve", "environment",
"variables"];

if environment :matches "imap.mailbox" "*" {
set "mailbox" "${1}";
}
if string "${mailbox}" "Trash" {
stop;
}
if environment :matches "imap.user" "*" {
set "username" "${1}";
}
pipe :copy "learn-ham.sh";

I disabled this one during the time I posted the initial message. For
completeness:
#mailbox Trash {

sieve_script flag-seen {
type = before
cause = copy append
path = /srv/sieve/imapsieve/setflag-seen.sieve
}
#}

setflag-seen.sieve:

set flag "\\seen"
require ["imap4flags"];
setflag "\\seen";
--
Christian Kivalo