[Dovecot] disconnecting (disconnected by server)

[Patrick Westenberg]

Hi all,

I just recognized a lot of log entries like this on my proxy:
Dec 03 13:50:54 imap-login: Info: proxy(m...@example.com): disconnecting 
1.2.3.4 (Disconnected by server): user=<m...@example.com>, method=PLAIN, 
rip=1.2.3.4, lip=2.4.6.8, TLS, session=<qk02v6DsJwBTlUQX>

There are no similar entries on the backends.

What does this mean? Something I have to worry about?

Regards
Patrick




# 2.2.7: /usr/local/etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.2
auth_mechanisms = plain login
default_process_limit = 150
director_mail_servers = 172.17.1.2 172.17.1.1
director_servers = 172.17.1.3 172.17.1.4
director_user_expire = 5 mins
lmtp_proxy = yes
log_path = /var/log/dovecot.log
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
protocols = imap pop3 lmtp sieve
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
  unix_listener auth-userdb {
    user = dovecot
  }
}
service director {
  fifo_listener login/proxy-notify {
    mode = 0666
  }
  inet_listener {
    address = 172.17.1.3
    port = 9090
  }
  unix_listener director-userdb {
    mode = 0600
  }
  unix_listener login/director {
    mode = 0666
  }
}
service imap-login {
  executable = imap-login director
}
service lmtp {
  inet_listener lmtp {
    address = 172.17.1.3
    port = 24
  }
}
service managesieve-login {
  executable = managesieve-login director
  inet_listener sieve {
    port = 4190
  }
}
service pop3-login {
  executable = pop3-login director
}
ssl_cert = </etc/ssl/certs/wildcard.example.com.crt
ssl_key = </etc/ssl/private/wildcard.example.com.key
protocol !smtp {
  passdb {
    args = proxy=y nopassword=y starttls=any-cert
    driver = static
  }
}
protocol smtp {
  passdb {
    args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
    driver = sql
  }
  userdb {
    args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
    driver = sql
  }
}
protocol lmtp {
  auth_socket_path = director-userdb
}



# 2.2.2: /usr/local/etc/dovecot/dovecot.conf
# OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.1
auth_mechanisms = plain login
disable_plaintext_auth = no
dotlock_use_excl = no
hostname = mb01.example.com
listen = 172.17.1.1
log_path = /var/log/dovecot.log
login_trusted_networks = 172.17.1.3 172.17.1.4
mail_fsync = always
mail_gid = vmail
mail_home = /var/mail/%d/%n
mail_location = maildir:~/Maildir
mail_plugins = quota
mail_uid = vmail
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
mmap_disable = yes
namespace inbox {
  inbox = yes
  location =
  mailbox Drafts {
    auto = subscribe
    special_use = \Drafts
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    auto = subscribe
    special_use = \Sent
  }
  mailbox Spamverdacht {
    auto = subscribe
  }
  mailbox Trash {
    auto = subscribe
    special_use = \Trash
  }
  prefix = INBOX.
  separator = .
  type = private
}
passdb {
  args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
plugin {
  quota = dict:User quota::file:%h/Maildir/dovecot-quota
  quota_rule2 = INBOX.Trash:ignore
  quota_warning = storage=90%% quota-warning 90 %u
  quota_warning2 = storage=75%% quota-warning 75 %u
  sieve = ~/.dovecot.sieve
  sieve_after = /usr/local/etc/dovecot/sieve/sieve_after.sieve
  sieve_default = /usr/local/etc/dovecot/sieve/default.sieve
  sieve_dir = ~/sieve
}
postmaster_address = postmas...@example.com
protocols = imap pop3 lmtp sieve
service auth {
  unix_listener auth-userdb {
    mode = 0666
    user = vmail
  }
}
service lmtp {
  inet_listener lmtp {
    address = 172.17.1.1
    port = 24
  }
}
service managesieve-login {
  inet_listener sieve {
    port = 4190
  }
}
service quota-warning {
  executable = script /usr/local/etc/dovecot/quota_warning.sh
  unix_listener quota-warning {
    user = vmail
  }
  user = root
}
ssl_cert = </etc/ssl/certs/mb01.example.com.crt
ssl_key = </etc/ssl/private/mb01.example.com.key
submission_host = mf01.wk-serv.net
userdb {
  args = /usr/local/etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocol lmtp {
  mail_plugins = quota sieve
}
protocol imap {
  mail_max_userip_connections = 30
  mail_plugins = quota imap_quota
}