[Dovecot] Signal 11 - can't get core dump?
Marty Anstey
marty.anstey at sunwave.net
Wed Aug 25 02:09:54 EEST 2010
Hi all,
We have been running Dovecot for over a year now in our moderate volume
mail environment (>4000 mailboxes) and it's been running great.
However, over the past month or so we've begun to experience issues
where IMAP clients will appear to "hang" for a period of time, we then
see a sig 11, and afterwards mailflow returns to normal. This usually
happens a few times a day.
Naturally, our first instinct was to try and get a core dump, but after
following the instructions at http://www.dovecot.org/bugreport.html we
now recieve this warning:
2010-08-24T13:33:56-07:00 mail dovecot: child 9728 (login) killed with
signal 11 (core not dumped - add -D to login_executable) (ip=208.98.210.13)
Adding -D to the login_executable lines didn't seem to have any effect,
we are still receiving the same message. Did we perhaps misinterpret the
hint?
As we've been trying for over a week now to find a way to get a dump
without any success, we figured posing this to the list might help us
shed some light on the issue. Any suggestions would be appreciated!
dovecot -n
--
# 1.1.20: /etc/dovecot.conf
# OS: Linux 2.6.18-164.15.1.el5xen i686 CentOS release 5.5 (Final) nfs
base_dir: /var/run/dovecot/
listen: 208.98.210.10
ssl_ca_file: /etc/ssl/gd_bundle.crt
ssl_cert_file: /etc/ssl/sunwave.net.crt
ssl_key_file: /etc/ssl/sunwave.net.key
ssl_parameters_regenerate: 1
ssl_cipher_list: ALL:!LOW
verbose_ssl: yes
login_dir: /var/run/dovecot//login
login_executable(default): /usr/libexec/dovecot/imap-login -D
login_executable(imap): /usr/libexec/dovecot/imap-login -D
login_executable(pop3): /usr/libexec/dovecot/pop3-login -D
mail_max_userip_connections(default): 50
mail_max_userip_connections(imap): 50
mail_max_userip_connections(pop3): 10
first_valid_uid: 200
last_valid_uid: 200
first_valid_gid: 200
last_valid_gid: 200
mail_location: maildir:/var/spool/mail/%Ld/%1Lu/%Ln/Maildir
mail_debug: yes
mmap_disable: yes
mail_nfs_storage: yes
mail_nfs_index: yes
mail_executable(default): /usr/local/bin/mailtools/mail_imap.sh
mail_executable(imap): /usr/local/bin/mailtools/mail_imap.sh
mail_executable(pop3): /usr/local/bin/mailtools/mail_pop3.sh
mail_plugins(default): quota imap_quota trash
mail_plugins(imap): quota imap_quota trash
mail_plugins(pop3): quota
mail_plugin_dir(default): /usr/lib/dovecot/imap
mail_plugin_dir(imap): /usr/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/lib/dovecot/pop3
namespace:
type: private
prefix: INBOX.
inbox: yes
list: yes
subscriptions: yes
lda:
postmaster_address: do_not_reply at sunwave.net
mail_plugins: quota cmusieve
auth default:
mechanisms: plain login
default_realm: sunwave.net
verbose: yes
passdb:
driver: sql
args: /etc/dovecot-mysql.conf
userdb:
driver: sql
args: /etc/dovecot-mysql.conf
socket:
type: listen
client:
path: /var/spool/postfix/private/auth
mode: 432
user: postfix
group: postfix
master:
path: /var/run/dovecot/auth-master
mode: 511
user: vmail
plugin:
sieve: /var/spool/mail/%Ld/%1Lu/%Ln/Maildir/.sieve
quota: maildir:Quota
quota_rule2: Trash:storage=10%%
quota_warning: storage=70%% /usr/local/bin/mailtools/quota-warning.sh 70
quota_warning2: storage=80%% /usr/local/bin/mailtools/quota-warning.sh 80
quota_warning3: storage=90%% /usr/local/bin/mailtools/quota-warning.sh 90
trash: /etc/dovecot-trash.conf
Thanks,
Marty
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