[Dovecot] Dovecot service not responding after about a week of uptime

[Matthieu]

On 03/24/2013 09:31 PM, Timo Sirainen wrote:
> On 24.3.2013, at 22.09, Matthieu <dovecot at pupat-ghestem.net> wrote:
>
>> On 03/24/2013 09:04 PM, Timo Sirainen wrote:
>>> On 24.3.2013, at 22.00, Matthieu <dovecot at pupat-ghestem.net> wrote:
>>>
>>>> On 03/24/2013 07:38 PM, Timo Sirainen wrote:
>>>>> egrep -i dovecot.*(error|warning) /var/log/maillog
>>>> The output of this command is empty.
>>> Every time you stop Dovecot it logs a warning. You said you started (=restarted?) dovecot, so I'd think you would see at least those.
>>>
>> Oh yes sorry. I filtered by time as well. Those are the warnings from the last restart:
> Well .. If Dovecot has a problem it should have logged about it. I'm not aware of any way to cause it to hang otherwise. doveconf -n output could be helpful, it might have something to do with your auth settings.
>
> Also it would help to know what happens when you connect to the IMAP port from localhost when it's hanging, and try to log in. Does it reply with the banner? Or does it hang only after using the login command? http://wiki2.dovecot.org/TestInstallation
>
Attached is the output of dovecot -n

Regarding connecting to the IMAP port this would have to wait until the 
next time the hang happens.
-------------- next part --------------
# dovecot -n
# 2.1.13: /etc/dovecot/dovecot.conf
# OS: Linux 3.6.11 armv6l Fedora remix release 17 (Raspberrypi Fedora Remix) ext4
mail_location = maildir:/home/mail/%u/Maildir
mbox_write_locks = fcntl
namespace {
  inbox = yes
  location = 
  mailbox {
    special_use = \Drafts
    name = Drafts
  }
  mailbox {
    special_use = \Junk
    name = Junk
  }
  mailbox {
    special_use = \Sent
    name = Sent
  }
  mailbox {
    special_use = \Sent
    name = Sent Messages
  }
  mailbox {
    special_use = \Trash
    name = Trash
  }
  prefix = 
  name = inbox
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocols = imap
service replication-notify-fifo {
  name = aggregator
}
service anvil-auth-penalty {
  name = anvil
}
service auth-worker {
  name = auth-worker
}
service {
  unix_listener {
    mode = 0666
    path = /var/spool/postfix/private/auth
  }
  name = auth
}
service config {
  name = config
}
service dict {
  name = dict
}
service login/proxy-notify {
  name = director
}
service dns-client {
  name = dns_client
}
service doveadm-server {
  name = doveadm
}
service imap {
  name = imap-login
}
service login/imap {
  name = imap
}
service indexer-worker {
  name = indexer-worker
}
service indexer {
  name = indexer
}
service ipc {
  name = ipc
}
service lmtp {
  name = lmtp
}
service log-errors {
  name = log
}
service pop3 {
  name = pop3-login
}
service login/pop3 {
  name = pop3
}
service replicator {
  name = replicator
}
service login/ssl-params {
  name = ssl-params
}
service stats-mail {
  name = stats
}
ssl = required
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem
userdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocol lmtp {
  service replication-notify-fifo {
    name = aggregator
  }
  service anvil-auth-penalty {
    name = anvil
  }
  service auth-worker {
    name = auth-worker
  }
  service auth-client {
    name = auth
  }
  service config {
    name = config
  }
  service dict {
    name = dict
  }
  service login/proxy-notify {
    name = director
  }
  service dns-client {
    name = dns_client
  }
  service doveadm-server {
    name = doveadm
  }
  service imap {
    name = imap-login
  }
  service login/imap {
    name = imap
  }
  service indexer-worker {
    name = indexer-worker
  }
  service indexer {
    name = indexer
  }
  service ipc {
    name = ipc
  }
  service lmtp {
    name = lmtp
  }
  service log-errors {
    name = log
  }
  service pop3 {
    name = pop3-login
  }
  service login/pop3 {
    name = pop3
  }
  service replicator {
    name = replicator
  }
  service login/ssl-params {
    name = ssl-params
  }
  service stats-mail {
    name = stats
  }
}
protocol lda {
  service replication-notify-fifo {
    name = aggregator
  }
  service anvil-auth-penalty {
    name = anvil
  }
  service auth-worker {
    name = auth-worker
  }
  service auth-client {
    name = auth
  }
  service config {
    name = config
  }
  service dict {
    name = dict
  }
  service login/proxy-notify {
    name = director
  }
  service dns-client {
    name = dns_client
  }
  service doveadm-server {
    name = doveadm
  }
  service imap {
    name = imap-login
  }
  service login/imap {
    name = imap
  }
  service indexer-worker {
    name = indexer-worker
  }
  service indexer {
    name = indexer
  }
  service ipc {
    name = ipc
  }
  service lmtp {
    name = lmtp
  }
  service log-errors {
    name = log
  }
  service pop3 {
    name = pop3-login
  }
  service login/pop3 {
    name = pop3
  }
  service replicator {
    name = replicator
  }
  service login/ssl-params {
    name = ssl-params
  }
  service stats-mail {
    name = stats
  }
}
protocol imap {
  mail_max_userip_connections = 20
  service replication-notify-fifo {
    name = aggregator
  }
  service anvil-auth-penalty {
    name = anvil
  }
  service auth-worker {
    name = auth-worker
  }
  service auth-client {
    name = auth
  }
  service config {
    name = config
  }
  service dict {
    name = dict
  }
  service login/proxy-notify {
    name = director
  }
  service dns-client {
    name = dns_client
  }
  service doveadm-server {
    name = doveadm
  }
  service imap {
    name = imap-login
  }
  service login/imap {
    name = imap
  }
  service indexer-worker {
    name = indexer-worker
  }
  service indexer {
    name = indexer
  }
  service ipc {
    name = ipc
  }
  service lmtp {
    name = lmtp
  }
  service log-errors {
    name = log
  }
  service pop3 {
    name = pop3-login
  }
  service login/pop3 {
    name = pop3
  }
  service replicator {
    name = replicator
  }
  service login/ssl-params {
    name = ssl-params
  }
  service stats-mail {
    name = stats
  }
}
protocol pop3 {
  service replication-notify-fifo {
    name = aggregator
  }
  service anvil-auth-penalty {
    name = anvil
  }
  service auth-worker {
    name = auth-worker
  }
  service auth-client {
    name = auth
  }
  service config {
    name = config
  }
  service dict {
    name = dict
  }
  service login/proxy-notify {
    name = director
  }
  service dns-client {
    name = dns_client
  }
  service doveadm-server {
    name = doveadm
  }
  service imap {
    name = imap-login
  }
  service login/imap {
    name = imap
  }
  service indexer-worker {
    name = indexer-worker
  }
  service indexer {
    name = indexer
  }
  service ipc {
    name = ipc
  }
  service lmtp {
    name = lmtp
  }
  service log-errors {
    name = log
  }
  service pop3 {
    name = pop3-login
  }
  service login/pop3 {
    name = pop3
  }
  service replicator {
    name = replicator
  }
  service login/ssl-params {
    name = ssl-params
  }
  service stats-mail {
    name = stats
  }
}