Hello List,
i have a problem with index-files which is separated in 2 subproblems.
May be these problems are connected.
Currently we use Ubuntu 18.04 LTS which is bundled with dovecot 2.2.33.2
These servers are fresh installed machines and users are added to the
system after, there was no upgrade.
Sometimes it happens, that dovecot stops showing new mail. There is no
error in log, dovecot just seems to do his normal operations but is not
delivering new emails from /var/mail/myuser
emails are delivered again if i delete index-files from .imap folder. So
index is recreated and everything works again. I cant reproduce this
problem, but every 2 days i have one user who is reporting this problem.
Second problem is similiar. I Upgraded a server from Ubuntu 16.04 to
Ubuntu 18.04. This includes an upgrade from dovecot 2.2.22 to 2.2.33.2.
After that i installed an self packaged dovecot 2.2.36.1
Now here is same problem, dovecot is not showing new mails, but the
difference is we have a Raw backtrace in Log just as expected:
Feb 8 08:45:37 hostname dovecot[14882]: imap(myuser): Error: Raw
backtrace: /usr/lib/dovecot/libdovecot.so.0(+0xa1ee2) [0x7f78b3b2cee2]
-> /usr/lib/dovecot/libdovecot.so.0(+0xa1fda) [0x7f78b3b2cfda] ->
/usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f78b3abb8a8] ->
/usr/lib/dovecot/libdovecot-storage.so.0(index_mail_parse_header+0x78a)
[0x7f78b3e7940a] -> /usr/lib/dovecot/libdovecot.so.0(+0x83592)
[0x7f78b3b0e592] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x74)
[0x7f78b3b38814] ->
/usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x3d)
[0x7f78b3b392fd] ->
/usr/lib/dovecot/libdovecot-storage.so.0(index_mail_get_header_stream+0x4a)
[0x7f78b3e7a2ea] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mail_get_header_stream+0x4a)
[0x7f78b3dfd8da] ->
/usr/lib/dovecot/libdovecot-storage.so.0(imap_msgpart_open+0x24a)
[0x7f78b3ebb57a] -> dovecot/imap [myuser ip.ip.ip.ip FETCH](+0x2081c)
[0x5581ac76d81c] -> dovecot/imap [m038422 ip.ip.ip.ip FETCH](+0x1ea54)
[0x5581ac76ba54] -> dovecot/imap [myuser ip.ip.ip.ip
FETCH](imap_fetch_more+0x39) [0x5581ac76cd69] -> dovecot/imap [myuser
ip.ip.ip.ip FETCH](cmd_fetch+0x31b) [0x5581ac75e1bb] -> dovecot/imap
[myuser ip.ip.ip.ip FETCH](command_exec+0x5c) [0x5581ac76a09c] ->
dovecot/imap [myuser ip.ip.ip.ip FETCH](+0x1b612) [0x5581ac768612] ->
dovecot/imap [myuser ip.ip.ip.ip FETCH](+0x1b6ac) [0x5581ac7686ac] ->
dovecot/imap [myuser ip.ip.ip.ip FETCH](client_handle_input+0x18d)
[0x5581ac768a6d] -> dovecot/imap [myuser ip.ip.ip.ip
FETCH](client_input+0xac) [0x5581ac768fbc] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x52) [0x7f78b3b43482]
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x12e)
[0x7f78b3b44b9e] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x36)
[0x7f78b3b43516] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38)
[0x7f78b3b436c8] ->
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7f78b3ac6aa3] -> dovecot/imap [myuser ip.ip.ip.ip FETCH](main+0x329)
[0x5581ac75b159] ->
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f78b36bbb97]
-> dovecot/imap [myuser ip.ip.ip.ip FETCH](_start+0x2a) [0x5581ac75b2fa]
Feb 8 08:45:37 hostname dovecot[14882]: imap(myuser): Fatal: master:
service(imap): child 14135 killed with signal 6 (core dumped)
Over all dovecot and OS versions we use same old-fashioned setup. Mails
are delivered by procmail to classic mbox file.
This is output of doveconf -n
# 2.2.36.1 (5d621cf65): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.21 (92477967)
# OS: Linux 4.18.0-14-generic x86_64 Ubuntu 18.04.1 LTS
# Hostname: myhostname
auth_mechanisms = plain login
auth_username_chars =
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@üÜöÖäÄ
auth_worker_max_count = 60
disable_plaintext_auth = no
imap_capability = +XLIST
lock_method = flock
login_greeting = mailserver ready.
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c
mail_cache_min_mail_count = 30
mail_location = mbox:~/mail:INBOX=/var/mail/%u
mail_max_userip_connections = 30
mbox_read_locks = dotlock
mbox_very_dirty_syncs = yes
namespace inbox {
inbox = yes
location =
mailbox Archiv {
auto = no
special_use =
}
mailbox Drafts {
auto = no
special_use =
}
mailbox Junk {
auto = no
special_use =
}
mailbox Sent {
auto = no
special_use =
}
mailbox Trash {
auto = no
special_use =
}
prefix =
}
passdb {
args = /etc/dovecot/dovecot-sql.conf
driver = sql
}
protocols = imap pop3
service auth-worker {
idle_kill = 1 mins
}
service auth {
idle_kill = 1 mins
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0660
user = postfix
}
user = root
}
service imap-login {
executable = /usr/lib/dovecot/imap-login
process_min_avail = 4
service_count = 0
user = dovecot
}
service imap {
process_limit = 1024
}
service pop3-login {
executable = /usr/lib/dovecot/pop3-login
process_min_avail = 4
service_count = 0
user = dovecot
}
service pop3 {
executable = /usr/lib/dovecot/pop3
process_limit = 1024
}
shutdown_clients = no
ssl_ca = </path/cert.pem
ssl_cert = </path/cert.pem
ssl_cipher_list =
ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:!DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA
ssl_dh_parameters_length = 2048
ssl_key = # hidden, use -P to show it
ssl_prefer_server_ciphers = yes
userdb {
args = /etc/dovecot/dovecot-sql.conf
driver = sql
}
verbose_proctitle = yes
protocol imap {
imap_client_workarounds = delay-newmail
mail_plugins = mail_log notify
ssl = yes
}
protocol pop3 {
pop3_client_workarounds = oe-ns-eoh outlook-no-nuls
pop3_no_flag_updates = no
pop3_uidl_format = %08Xu%08Xv
ssl = yes
}
Whats going wrong here? Main problem is first one. dovecot stops showing
new mail during service without telling a reason. reason looks like a
broken index file.
What to do here? Please tell me your opinion.
Thanks,
Hajo
