We ran into the same problem on Debian 11 bullseye testing. Please see the
attachment for `doveconf -n` output.
## Postfix Log
Jul 10 15:33:18 host2 postfix/postfix-script[1219]: warning: symlink leaves
directory: /etc/postfix/./makedefs.out
Jul 10 15:33:19 host2 postfix/postfix-script[1397]: starting the Postfix mail
system
Jul 10 15:33:19 host2 postfix/master[1399]: daemon started -- version 3.5.6,
configuration /etc/postfix
Jul 10 15:39:13 host2 postfix/smtpd[1463]: connect from _gateway[10.42.0.1]
Jul 10 15:39:13 host2 postfix/smtpd[1463]: B7B9234631:
client=_gateway[10.42.0.1]
Jul 10 15:39:13 host2 postfix/cleanup[1533]: B7B9234631:
message-id=<20210710153902.003128@debian>
Jul 10 15:39:19 host2 postfix/smtpd[1463]: disconnect from _gateway[10.42.0.1]
ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
Jul 10 15:39:19 host2 postfix/qmgr[1401]: B7B9234631:
from=<nore...@host1.test.example>, size=503, nrcpt=1 (queue active)
Jul 10 15:39:20 host2 postfix/lmtp[1535]: B7B9234631:
to=<r...@host2.test.example>, orig_to=<postmas...@host2.test.example>,
relay=host2.test.example[private/dovecot-lmtp], delay=6.2,
delays=6/0.08/0.13/0, dsn=4.4.2, status=deferred (lost connection with
host2.test.example[private/dovecot-lmtp] while receiving the initial server
greeting)
Jul 10 15:42:39 host2 postfix/anvil[1529]: statistics: max connection rate
1/60s for (smtp:10.42.0.1) at Jul 10 15:39:13
Jul 10 15:42:39 host2 postfix/anvil[1529]: statistics: max connection count 1
for (smtp:10.42.0.1) at Jul 10 15:39:13
Jul 10 15:42:39 host2 postfix/anvil[1529]: statistics: max cache size 1 at Jul
10 15:39:13
## Dovecot Log
Jul 10 15:32:53 master: Info: Dovecot v2.3.13 (89f716dc2) starting up for imap,
lmtp, sieve, pop3 (core dumps disabled)
Jul 10 15:36:20 master: Warning: Killed with signal 15 (by pid=1435 uid=0
code=kill)
Jul 10 15:36:22 master: Info: Dovecot v2.3.13 (89f716dc2) starting up for imap,
lmtp, sieve, pop3 (core dumps disabled)
Jul 10 15:39:13 auth: Debug: Loading modules from directory:
/usr/lib/dovecot/modules/auth
Jul 10 15:39:13 auth: Debug: Module loaded:
/usr/lib/dovecot/modules/auth/lib20_auth_var_expand_crypt.so
Jul 10 15:39:13 auth: Debug: Loading modules from directory:
/usr/lib/dovecot/modules/auth
Jul 10 15:39:13 auth: Debug: Module loaded:
/usr/lib/dovecot/modules/auth/libauthdb_ldap.so
Jul 10 15:39:13 auth: Debug: Wrote new auth token secret to
/run/dovecot/auth-token-secret.dat
Jul 10 15:39:13 auth: Debug: auth client connected (pid=0)
Jul 10 15:39:19 lmtp(1536): Fatal: Couldn't load required plugin
/usr/lib/dovecot/modules/lib95_imap_sieve_plugin.so: dlopen() failed:
/usr/lib/dovecot/modules/lib95_imap_sieve_plugin.so: undefined symbol:
command_hook_register
## System Information
Distributor ID: Debian
Description: Debian GNU/Linux 11 (bullseye)
Release: 11
Codename: bullseye
dovecot-core/testing,now 1:2.3.13+dfsg1-1 amd64 [installed,automatic]
dovecot-imapd/testing,now 1:2.3.13+dfsg1-1 amd64 [installed]
dovecot-ldap/testing,now 1:2.3.13+dfsg1-1 amd64 [installed]
dovecot-lmtpd/testing,now 1:2.3.13+dfsg1-1 amd64 [installed]
dovecot-managesieved/testing,now 1:2.3.13+dfsg1-1 amd64 [installed]
dovecot-pop3d/testing,now 1:2.3.13+dfsg1-1 amd64 [installed]
dovecot-sieve/testing,now 1:2.3.13+dfsg1-1 amd64 [installed,automatic]
## doveconf -n
# 2.3.13 (89f716dc2): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.13 (cdd19fe3)
# OS: Linux 4.19.0-16-amd64 x86_64 Debian 11.0
# Hostname: freedombox
auth_debug = yes
auth_verbose = yes
log_path = /var/log/fbx-dovecot.log
mail_debug = yes
mail_location = mbox:~/mail:INBOX=/var/mail/%u
mail_plugins = " imap_sieve"
mail_privileged_group = mail
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy
include variables body enotify environment mailbox date index ihave duplicate
mime foreverypart extracttext
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
}
passdb {
args = /etc/dovecot/freedombox-ldap-passdb.conf.ext
driver = ldap
result_failure = return-fail
result_internalfail = return-fail
}
passdb {
driver = pam
}
plugin {
sieve = file:~/sieve;active=~/.dovecot.sieve
}
protocols = " imap lmtp sieve pop3"
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0600
user = postfix
}
}
service lmtp {
unix_listener /var/spool/postfix/private/dovecot-lmtp {
group = postfix
mode = 0600
user = postfix
}
}
ssl_cert = </etc/dovecot/private/dovecot.pem
ssl_client_ca_dir = /etc/ssl/certs
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
userdb {
args = /etc/dovecot/freedombox-ldap-userdb-aliases.conf.ext
driver = ldap
result_internalfail = return-fail
}
userdb {
args = /etc/dovecot/freedombox-ldap-userdb.conf.ext
driver = ldap
result_failure = return-fail
result_internalfail = return-fail
}
userdb {
driver = passwd
}
verbose_ssl = yes
