lmtp panic

Sergey Schwartz sergey.schwartz at bgoperator.com
Mon Nov 23 16:25:29 UTC 2015


Timo,

I've changed postfix lmtp delivery config to deal with storm conditions 
(oleg's emails), so that other users didn't wait for their email for hours.

lmtp_destination_recipient_limit = 1

Number of error messages had dramatically reduced.
It looks like concurrency is the root cause of the problem.

I'm rebuilding oleg's mailbox just in case something was broken.

dovecot.index.cache files looks tiny now


-rw------- 1 vmail vmail 7,9M нояб. 23 18:39 
./mailboxes/INBOX/dbox-Mails/dovecot.index.cache
-rw------- 1 vmail vmail 452 нояб. 23 13:47 
./mailboxes/Drafts/dbox-Mails/dovecot.index.cache
-rw------- 1 vmail vmail 2,1M нояб. 23 17:27 
./mailboxes/Sent/dbox-Mails/dovecot.index.cache
-rw------- 1 vmail vmail 28K нояб. 23 16:58 
./mailboxes/Junk/dbox-Mails/dovecot.index.cache
-rw------- 1 vmail vmail 32K нояб. 23 18:26 
./mailboxes/Trash/dbox-Mails/dovecot.index.cache
-rw------- 1 vmail vmail 29M нояб. 23 19:07 
./mailboxes/noreplybg/dbox-Mails/dovecot.index.cache
-rw------- 1 vmail vmail 532 нояб. 20 17:04 
./mailboxes/noreplybg/2015q2/dbox-Mails/dovecot.index.cache
-rw------- 1 vmail vmail 49M нояб. 23 19:05 
./mailboxes/noreplybg/2015q3/dbox-Mails/dovecot.index.cache
-rw------- 1 vmail vmail 26M нояб. 23 18:00 
./mailboxes/noreplybg/2015q4/dbox-Mails/dovecot.index.cache
-rw------- 1 vmail vmail 349K нояб. 23 16:31 
./mailboxes/provisa/dbox-Mails/dovecot.index.cache

sort emails by folders, not sure if this will help in case of mdbox

root at mx10:/etc/postfix# doveadm -f table mailbox status -u 
oleg.vasilyev at bgoperator.com -t all noreplybg/2015q3
messages recent  unseen vsize
1307684  1307684 851074 11566574000
root at mx10:/etc/postfix# doveadm -f table mailbox status -u 
oleg.vasilyev at bgoperator.com -t all noreplybg/2015q4
messages recent unseen vsize
754266   754266 753931 9271563127
root at mx10:/etc/postfix#


Best regards,
Sergey Schwartz

Senior System Administrator
Biblio Globus Tour Operator
www.bgoperator.ru

T: +7 495 5042500 ext 1532
E: sergey.schwartz at bgoperator.com

23.11.2015 12:46, Sergey Schwartz пишет:
> Timo,
>
> -rw------- 1 vmail vmail *1,7G* нояб. 16 22:54 
> ./mailboxes/noreply-05-08-2015/dbox-Mails/dovecot.index.cache
>
> the largest one
>
> Best regards,
> Sergey Schwartz
>
> Senior System Administrator
> Biblio Globus Tour Operator
> www.bgoperator.ru
>
> T: +7 495 5042500 ext 1532
> E: sergey.schwartz at bgoperator.com
>
> 21.11.2015 04:25, Timo Sirainen пишет:
>> Do you have a huge >4GB dovecot.index.cache file?
>>
>>> On 17 Nov 2015, at 13:04, Sergey Schwartz 
>>> <sergey.schwartz at bgoperator.com> wrote:
>>>
>>> Gentlemen,
>>>
>>> imap hits the same problem
>>>
>>> Nov 17 14:02:06 mx10 dovecot: imap(oleg.vasilyev at bgoperator.com): 
>>> Panic: file mail-index-util.c: line 37 
>>> (mail_index_uint32_to_offset): assertion failed: (offset < 0x40000000)
>>> Nov 17 14:02:06 mx10 dovecot: imap(oleg.vasilyev at bgoperator.com): 
>>> Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x8215e) 
>>> [0x7f8c8ce0915e] -> /usr/lib/dovecot/libdovecot.so.0(+0x8224c) 
>>> [0x7f8c8ce0924c] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) 
>>> [0x7f8c8cdb090e] -> 
>>> /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_uint32_to_offset+0x78) 
>>> [0x7f8c8d161c58] -> 
>>> /usr/lib/dovecot/libdovecot-storage.so.0(mail_cache_add+0x6eb) 
>>> [0x7f8c8d14babb] -> 
>>> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_parse_header+0x280) 
>>> [0x7f8c8d131f90] -> /usr/lib/dovecot/libdovecot.so.0(+0x6bace) 
>>> [0x7f8c8cdf2ace] -> 
>>> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x53) 
>>> [0x7f8c8ce13483] -> 
>>> /usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x3d) 
>>> [0x7f8c8ce13e7d] -> 
>>> /usr/lib/dovecot/libdovecot.so.0(message_parse_header_next+0x82) 
>>> [0x7f8c8cdf7cb2] -> /usr/lib/dovecot/libdovecot.so.0(+0x6b429) 
>>> [0x7f8c8cdf2429] -> 
>>> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x53) 
>>> [0x7f8c8ce13483] -> 
>>> /usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x3d) 
>>> [0x7f8c8ce13e7d] -> 
>>> /usr/lib/dovecot/libdovecot.so.0(message_get_header_size+0x74) 
>>> [0x7f8c8cdfb564] -> 
>>> /usr/lib/dovecot/libdovecot-storage.so.0(imap_msgpart_open+0x317) 
>>> [0x7f8c8d16f827] -> dovecot/imap(+0x1effe) [0x7f8c8d5ffffe] -> 
>>> dovecot/imap(+0x1d3fc) [0x7f8c8d5fe3fc] -> 
>>> dovecot/imap(imap_fetch_more+0x3a) [0x7f8c8d5ff4fa] -> 
>>> dovecot/imap(cmd_fetch+0x354) [0x7f8c8d5f1934] -> 
>>> dovecot/imap(command_exec+0x85) [0x7f8c8d5fcbe5] -> 
>>> dovecot/imap(+0x1a152) [0x7f8c8d5fb152] -> dovecot/imap(+0x1a1e0) 
>>> [0x7f8c8d5fb1e0] -> dovecot/imap(client_handle_input+0x13d) 
>>> [0x7f8c8d5fb54d] -> dovecot/imap(client_input+0x85) [0x7f8c8d5fb915] 
>>> -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) 
>>> [0x7f8c8ce1cc4c] -> 
>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x101) 
>>> [0x7f8c8ce1e0b1] -> 
>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) 
>>> [0x7f8c8ce1ccd5] -> 
>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f8c8ce1ce78]
>>> Nov 17 14:02:06 mx10 dovecot: imap(oleg.vasilyev at bgoperator.com): 
>>> Fatal: master: service(imap): child 7445 killed with signal 6 (core 
>>> dumped)
>>>
>>> any ideas how to fix this ?
>>>
>>> Best regards,
>>> Sergey Schwartz
>>>
>>> Senior System Administrator
>>> Biblio Globus Tour Operator
>>> www.bgoperator.ru
>>>
>>> T: +7 495 5042500 ext 1532
>>> E: sergey.schwartz at bgoperator.com
>>>
>>> 13.11.2015 12:40, Sergey Schwartz пишет:
>>>> root at mx10:~# doveadm force-resync -u oleg.vasilyev at bgoperator.com 
>>>> noreply-05-08-2015
>>>> doveadm(oleg.vasilyev at bgoperator.com): Warning: fscking index file 
>>>> /srv/vmail/current/bgoperator.com/oleg.vasilyev/storage/dovecot.map.index
>>>> doveadm(oleg.vasilyev at bgoperator.com): Warning: mdbox 
>>>> /srv/vmail/current/bgoperator.com/oleg.vasilyev/storage: rebuilding 
>>>> indexes
>>>> doveadm(oleg.vasilyev at bgoperator.com): Panic: file 
>>>> mail-index-util.c: line 37 (mail_index_uint32_to_offset): assertion 
>>>> failed: (offset < 0x40000000)
>>>> doveadm(oleg.vasilyev at bgoperator.com): Error: Raw backtrace: 
>>>> /usr/lib/dovecot/libdovecot.so.0(+0x820de) [0x7f0f6f04e0de] -> 
>>>> /usr/lib/dovecot/libdovecot.so.0(+0x82158) [0x7f0f6f04e158] -> 
>>>> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f0f6eff58de] -> 
>>>> /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_uint32_to_offset+0x78) 
>>>> [0x7f0f6f3a6c58] -> 
>>>> /usr/lib/dovecot/libdovecot-storage.so.0(mail_cache_compress+0xaad) 
>>>> [0x7f0f6f38c83d] -> 
>>>> /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_sync_commit+0x2c7) 
>>>> [0x7f0f6f39f4b7] -> 
>>>> /usr/lib/dovecot/libdovecot-storage.so.0(mdbox_storage_rebuild_in_context+0x1109) 
>>>> [0x7f0f6f329189] -> 
>>>> /usr/lib/dovecot/libdovecot-storage.so.0(mdbox_sync_begin+0x825) 
>>>> [0x7f0f6f32aaf5] -> 
>>>> /usr/lib/dovecot/libdovecot-storage.so.0(mdbox_sync+0x4c) 
>>>> [0x7f0f6f32ac7c] -> 
>>>> /usr/lib/dovecot/libdovecot-storage.so.0(mdbox_storage_sync_init+0x42) 
>>>> [0x7f0f6f32ad32] -> 
>>>> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x3b) 
>>>> [0x7f0f6f3106eb] -> 
>>>> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37) 
>>>> [0x7f0f6f310837] -> doveadm(+0x258e4) [0x7f0f6fc9d8e4] -> 
>>>> doveadm(+0x2547e) [0x7f0f6fc9d47e] -> 
>>>> doveadm(doveadm_mail_try_run+0x2ac) [0x7f0f6fc9e4dc] -> 
>>>> doveadm(main+0x3a5) [0x7f0f6fc8f245] -> 
>>>> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) 
>>>> [0x7f0f6ec28ec5] -> doveadm(+0x1734e) [0x7f0f6fc8f34e]
>>>>
>>>>
>>>> root at mx10:~# doveconf -n
>>>> # 2.2.19 (0b1c73b01a5a): /etc/dovecot/dovecot.conf
>>>> # Pigeonhole version 0.4.9
>>>> # OS: Linux 3.13.0-34-generic x86_64 Ubuntu 14.04.3 LTS xfs
>>>> auth_cache_negative_ttl = 0
>>>> auth_cache_size = 512 M
>>>> auth_default_realm = bgoperator.com
>>>> auth_failure_delay = 5 secs
>>>> auth_worker_max_count = 4096
>>>> default_client_limit = 40960
>>>> default_process_limit = 8192
>>>> default_vsz_limit = 2 G
>>>> disable_plaintext_auth = no
>>>> first_valid_gid = 500
>>>> mail_location = mdbox:/srv/vmail/current/%d/%n
>>>> mail_plugins = acl zlib notify replication
>>>> mail_shared_explicit_inbox = yes
>>>> mailbox_list_index = yes
>>>> 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
>>>> mdbox_rotate_size = 32 M
>>>> namespace {
>>>>   list = yes
>>>>   location = mdbox:/srv/vmail/current/%%d/%%n
>>>>   prefix = shared/%%u/
>>>>   separator = /
>>>>   subscriptions = no
>>>>   type = shared
>>>> }
>>>> namespace inbox {
>>>>   inbox = yes
>>>>   location =
>>>>   mailbox Drafts {
>>>>     auto = subscribe
>>>>     special_use = \Drafts
>>>>   }
>>>>   mailbox Junk {
>>>>     auto = subscribe
>>>>     special_use = \Junk
>>>>   }
>>>>   mailbox Sent {
>>>>     auto = subscribe
>>>>     special_use = \Sent
>>>>   }
>>>>   mailbox Trash {
>>>>     auto = subscribe
>>>>     special_use = \Trash
>>>>   }
>>>>   prefix =
>>>>   separator = /
>>>> }
>>>> passdb {
>>>>   args = /etc/dovecot/virtual/base.conf.ext
>>>>   driver = sql
>>>> }
>>>> passdb {
>>>>   args = /etc/dovecot/virtual/master.conf.ext
>>>>   driver = sql
>>>> }
>>>> plugin {
>>>>   acl = vfile
>>>>   acl_shared_dict = 
>>>> file:/srv/vmail/current/shared.db/000-shared-mailboxes.db
>>>>   sieve = 
>>>> file:/srv/vmail/current/%d/%n/sieve;active=/srv/vmail/current/%d/%n/active.sieve
>>>>   sieve_max_redirects = 0
>>>>   zlib_save = xz
>>>>   zlib_save_level = 6
>>>> }
>>>> protocols = " imap lmtp sieve"
>>>> service auth-worker {
>>>>   process_limit = 4096
>>>> }
>>>> service auth {
>>>>   unix_listener /var/spool/postfix/private/auth {
>>>>     group = postfix
>>>>     mode = 0666
>>>>     user = postfix
>>>>   }
>>>> }
>>>> service imap-login {
>>>>   process_limit = 4096
>>>>   process_min_avail = 24
>>>> }
>>>> service imap {
>>>>   process_limit = 4096
>>>> }
>>>> service lmtp {
>>>>   unix_listener /var/spool/postfix/private/dovecot-lmtp {
>>>>     group = postfix
>>>>     mode = 0600
>>>>     user = postfix
>>>>   }
>>>> }
>>>> ssl_cert = </etc/ssl/mxbgcom/2015/bgoperator.com.crt.chained
>>>> ssl_key = </etc/ssl/mxbgcom/2015/bgoperator.com.key
>>>> syslog_facility = local0
>>>> userdb {
>>>>   args = /etc/dovecot/virtual/base.conf.ext
>>>>   driver = sql
>>>> }
>>>> protocol lmtp {
>>>>   mail_plugins = acl zlib notify replication sieve
>>>> }
>>>> protocol imap {
>>>>   mail_max_userip_connections = 50
>>>>   mail_plugins = acl zlib notify replication imap_acl
>>>> }
>>>>
>>>>
>>>>
>>>> Best regards,
>>>> Sergey Schwartz
>>>>
>>>> Senior System Administrator
>>>> Biblio Globus Tour Operator
>>>> www.bgoperator.ru
>>>>
>>>> T: +7 495 5042500 ext 1532
>>>> E: sergey.schwartz at bgoperator.com
>>>>
>>>> 11.11.2015 17:06, Sergey Schwartz пишет:
>>>>> After 1 or 2 hours of recieveing this kind of errors mail server 
>>>>> runs out of file descriptors
>>>>>
>>>>> Nov 11 16:22:20 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:24 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:25 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:27 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:27 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:27 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:28 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:28 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:30 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:31 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:31 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:32 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:32 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:55 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:22:55 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>> Nov 11 16:23:00 mx10 dovecot: config: Error: net_accept() failed: 
>>>>> Too many open files
>>>>>
>>>>>
>>>>> Best regards,
>>>>> Sergey Schwartz
>>>>>
>>>>> Senior System Administrator
>>>>> Biblio Globus Tour Operator
>>>>> www.bgoperator.ru
>>>>>
>>>>> T: +7 495 5042500 ext 1532
>>>>> E: sergey.schwartz at bgoperator.com
>>>>>
>>>>> 10.11.2015 15:46, Sergey Schwartz пишет:
>>>>>> Gents,
>>>>>>
>>>>>>
>>>>>>
>>>>>> I've just upgraded to the latest build of dovecot , now lmtp 
>>>>>> delivery process panics for just one user
>>>>>>
>>>>>>
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Panic: file str.c: line 22 (str_new_const): assertion failed: 
>>>>>> (str[len] == '\0')
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Panic: file str.c: line 22 (str_new_const): assertion failed: 
>>>>>> (str[len] == '\0')
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x820de) 
>>>>>> [0x7f50e596b0de] -> /usr/lib/dovecot/libdovecot.so.0(+0x821cc) 
>>>>>> [0x7f50e596b1cc] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) 
>>>>>> [0x7f50e59128de] -> /usr/lib/dovecot/libdovecot.so.0(+0xa8bf8) 
>>>>>> [0x7f50e5991bf8] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x5ddbd) [0x7f50e380ddbd] 
>>>>>> -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_match+0xf1) 
>>>>>> [0x7f50e37f43b1] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x5f555) [0x7f50e380f555] 
>>>>>> -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_continue+0xe7) 
>>>>>> [0x7f50e37eb2e7] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_run+0x2b) [0x7f50e37eb46b] 
>>>>>> -> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x4e6ea) 
>>>>>> [0x7f50e37fe6ea] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_execute+0x47) 
>>>>>> [0x7f50e37ff277] -> 
>>>>>> /usr/lib/dovecot/modules/lib90_sieve_plugin.so(+0x3b81) 
>>>>>> [0x7f50e3a62b81] -> 
>>>>>> /usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0x49) 
>>>>>> [0x7f50e5f26899] -> dovecot/lmtp(+0x6a04) [0x7f50e6357a04] -> 
>>>>>> dovecot/lmtp(+0x72d7) [0x7f50e63582d7] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) 
>>>>>> [0x7f50e597ebbc] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x101) 
>>>>>> [0x7f50e597ffb1] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) 
>>>>>> [0x7f50e597ec45] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) 
>>>>>> [0x7f50e597ede8] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) 
>>>>>> [0x7f50e59182e3] -> dovecot/lmtp(main+0x165) [0x7f50e6356135] -> 
>>>>>> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) 
>>>>>> [0x7f50e5545ec5] -> dovecot/lmtp(+0x5223) [0x7f50e6356223]
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x820de) 
>>>>>> [0x7f887f40e0de] -> /usr/lib/dovecot/libdovecot.so.0(+0x821cc) 
>>>>>> [0x7f887f40e1cc] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) 
>>>>>> [0x7f887f3b58de] -> /usr/lib/dovecot/libdovecot.so.0(+0xa8bf8) 
>>>>>> [0x7f887f434bf8] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x5ddbd) [0x7f887d2b0dbd] 
>>>>>> -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_match+0xf1) 
>>>>>> [0x7f887d2973b1] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x5f555) [0x7f887d2b2555] 
>>>>>> -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_continue+0xe7) 
>>>>>> [0x7f887d28e2e7] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_run+0x2b) [0x7f887d28e46b] 
>>>>>> -> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x4e6ea) 
>>>>>> [0x7f887d2a16ea] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_execute+0x47) 
>>>>>> [0x7f887d2a2277] -> 
>>>>>> /usr/lib/dovecot/modules/lib90_sieve_plugin.so(+0x3b81) 
>>>>>> [0x7f887d505b81] -> 
>>>>>> /usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0x49) 
>>>>>> [0x7f887f9c9899] -> dovecot/lmtp(+0x6a04) [0x7f887fdfaa04] -> 
>>>>>> dovecot/lmtp(+0x72d7) [0x7f887fdfb2d7] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) 
>>>>>> [0x7f887f421bbc] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x101) 
>>>>>> [0x7f887f422fb1] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) 
>>>>>> [0x7f887f421c45] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) 
>>>>>> [0x7f887f421de8] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) 
>>>>>> [0x7f887f3bb2e3] -> dovecot/lmtp(main+0x165) [0x7f887fdf9135] -> 
>>>>>> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) 
>>>>>> [0x7f887efe8ec5] -> dovecot/lmtp(+0x5223) [0x7f887fdf9223]
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(7502): Connect from local
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(7509): Connect from local
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Panic: file str.c: line 22 (str_new_const): assertion failed: 
>>>>>> (str[len] == '\0')
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x820de) 
>>>>>> [0x7fd26d0530de] -> /usr/lib/dovecot/libdovecot.so.0(+0x821cc) 
>>>>>> [0x7fd26d0531cc] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) 
>>>>>> [0x7fd26cffa8de] -> /usr/lib/dovecot/libdovecot.so.0(+0xa8bf8) 
>>>>>> [0x7fd26d079bf8] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x5ddbd) [0x7fd26aef5dbd] 
>>>>>> -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_match+0xf1) 
>>>>>> [0x7fd26aedc3b1] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x5f555) [0x7fd26aef7555] 
>>>>>> -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_continue+0xe7) 
>>>>>> [0x7fd26aed32e7] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_run+0x2b) [0x7fd26aed346b] 
>>>>>> -> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x4e6ea) 
>>>>>> [0x7fd26aee66ea] -> 
>>>>>> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_execute+0x47) 
>>>>>> [0x7fd26aee7277] -> 
>>>>>> /usr/lib/dovecot/modules/lib90_sieve_plugin.so(+0x3b81) 
>>>>>> [0x7fd26b14ab81] -> 
>>>>>> /usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0x49) 
>>>>>> [0x7fd26d60e899] -> dovecot/lmtp(+0x6a04) [0x7fd26da3fa04] -> 
>>>>>> dovecot/lmtp(+0x72d7) [0x7fd26da402d7] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) 
>>>>>> [0x7fd26d066bbc] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x101) 
>>>>>> [0x7fd26d067fb1] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) 
>>>>>> [0x7fd26d066c45] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) 
>>>>>> [0x7fd26d066de8] -> 
>>>>>> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) 
>>>>>> [0x7fd26d0002e3] -> dovecot/lmtp(main+0x165) [0x7fd26da3e135] -> 
>>>>>> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) 
>>>>>> [0x7fd26cc2dec5] -> dovecot/lmtp(+0x5223) [0x7fd26da3e223]
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Fatal: master: service(lmtp): child 7494 killed with signal 6 
>>>>>> (core dumped)
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Fatal: master: service(lmtp): child 7497 killed with signal 6 
>>>>>> (core dumped)
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Fatal: master: service(lmtp): child 7499 killed with signal 6 
>>>>>> (core dumped)
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Fatal: master: service(lmtp): child 6719 killed with signal 6 
>>>>>> (core dumped)
>>>>>> Nov 10 15:36:49 mx10 dovecot: lmtp(oleg.vasilyev at bgoperator.com): 
>>>>>> Fatal: master: service(lmtp): child 7502 killed with signal 6 
>>>>>> (core dumped)
>>>>>> Nov 10 15:36:51 mx10 dovecot: lmtp(7509): Disconnect from local: 
>>>>>> Connection closed (in DATA finished)
>>>>>>
>>>>>>
>>>>>> Oleg has lots and lots of small emails :)
>>>>>>
>>>>>> I'm running ubuntu server 14.04 x86_64
>>>>>> dovecot 2.2.19 (0b1c73b01a5a) build from 
>>>>>> http://xi.rename-it.nl/debian/ jessie-auto/dovecot-2.2 main
>>>>>>



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