[Dovecot] 2.0.19 segfault

[Mailing List SVR]

Il 24/06/2012 00:05, Timo Sirainen ha scritto:
> On Sat, 2012-06-23 at 22:39 +0200, Mailing List SVR wrote:
>
>> after the upgrade from dovecot 2.0.13 (ubuntu oneiric) to dovecot 2.0.19
>> (ubuntu precise), in my logs I have a lot of these errors:
>>
>> Jun 23 00:20:29 server1 dovecot: master: Error: service(imap-login):
>> child 6714 killed with signal 11 (core dumps disabled)
>>
>> I tested 2.0.21 and the problem is still here. The problem seems to
>> appear only when the client is ms outlook, thunderbird works fine
> Looks to me more like OpenSSL library bug. The only reason why it could
> be Dovecot bug is if Dovecot is causing memory corruption. Could you run
> imap-login via valgrind to see if this is the case?
>
> service imap-login {
>    executable = /usr/bin/valgrind -q --vgdb=no /usr/local/libexec/dovecot/imap-login
>    chroot =
> }
>
> Also have you changed any ssl-related settings in dovecot.conf?
>

attached my complete configuration, I hope there is a mistake in my config

I looked at the code and there was no relevant change from dovecot 
2.0.13 and dovecot 2.0.19, upgrading between ubuntu releases updated 
openssl too and this could be the problem,

however is not clear to me while imap over ssl works fine with 
thunderdird and I see the crash in the logs for customers that seems to 
use ms outlook,

Nicola

>


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# 2.0.19: /etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-25-generic x86_64 Ubuntu 12.04 LTS ext4
auth_cache_size = 10 M
auth_mechanisms = plain login
auth_socket_path = /var/run/dovecot/auth-userdb
auth_worker_max_count = 128
base_dir = /var/run/dovecot/
default_process_limit = 200
disable_plaintext_auth = no
first_valid_gid = 2000
first_valid_uid = 2000
hostname = mail.svrinformatica.it
last_valid_gid = 2000
last_valid_uid = 2000
listen = *
login_greeting = SVR ready.
mail_location = maildir:/srv/panel/mail/%d/%t/Maildir
mail_plugins = " quota trash autocreate"
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 ihave
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
plugin {
  autocreate = Trash
  autocreate2 = Junk
  autocreate3 = Drafts
  autocreate4 = Sent
  autosubscribe = Trash
  autosubscribe2 = Junk
  autosubscribe3 = Drafts
  autosubscribe4 = Sent
  quota = maildir:User quota
  quota_rule = *:storage=300MB
  quota_rule2 = Trash:ignore
  quota_warning = storage=95%% quota-warning 95 %u
  quota_warning2 = storage=80%% quota-warning 80 %u
  sieve = ~/.dovecot.sieve
  sieve_before = /etc/dovecot/sieve/move-spam.sieve
  sieve_dir = ~/sieve
  sieve_max_actions = 32
  sieve_max_redirects = 4
  sieve_max_script_size = 1M
  sieve_quota_max_scripts = 10
  sieve_quota_max_storage = 2M
  trash = /etc/dovecot/dovecot-trash.conf.ext
}
postmaster_address = postmaster at svrinformatica.it
protocols = imap pop3 sieve
service auth-worker {
  user = $default_internal_user
}
service auth {
  unix_listener /var/spool/postfix/private/dovecot-auth {
    group = vmail
    mode = 0660
    user = postfix
  }
  unix_listener auth-userdb {
    group = vmail
    mode = 0660
    user = vmail
  }
  user = $default_internal_user
}
service managesieve-login {
  inet_listener sieve {
    port = 4190
  }
}
service quota-warning {
  executable = script /srv/panel/django/systemcp/systemutils/mail/quota-warning.py
  unix_listener quota-warning {
    user = vmail
  }
  user = dovecot
}
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_cipher_list = ALL:!LOW:!SSLv2:ALL:!aNULL:!ADH:!eNULL:!EXP:RC4+RSA:+HIGH:+MEDIUM
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
  driver = prefetch
}
userdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocol lda {
  mail_plugins = " quota trash autocreate sieve"
}
protocol imap {
  imap_client_workarounds = delay-newmail
  mail_max_userip_connections = 10
  mail_plugins = " quota trash autocreate imap_quota"
}
protocol sieve {
  mail_max_userip_connections = 10
  mail_plugins = " quota trash autocreate"
  managesieve_max_compile_errors = 5
}
protocol pop3 {
  mail_max_userip_connections = 10
  mail_plugins = " quota trash autocreate"
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
}