# 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.4 ()
# OS: Linux 4.19.0-17-amd64 x86_64 Debian 10.10 
# Hostname: mail.mail.example.com
auth_debug = yes
auth_default_realm = mail.example.com
auth_master_user_separator = *
auth_mechanisms = PLAIN LOGIN
auth_verbose = yes
default_process_limit = 600
deliver_log_format = from=%{from}, envelope_sender=%{from_envelope}, subject=%{subject}, msgid=%m, size=%{size}, delivery_time=%{delivery_time}ms, %$
dict {
  acl = mysql:/etc/dovecot/dovecot-share-folder.conf
  lastlogin = mysql:/etc/dovecot/dovecot-last-login.conf
  quotadict = mysql:/etc/dovecot/dovecot-used-quota.conf
}
first_valid_uid = 2000
last_valid_uid = 2000
listen = * [::]
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c %k session=<%{session}>
mail_debug = yes
mail_gid = 2000
mail_location = maildir:%Lh/Maildir/:INDEX=%Lh/Maildir/
mail_plugins = quota mailbox_alias acl mail_log notify
mail_uid = 2000
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 mime foreverypart extracttext
metric imap_command_finished {
  event_name = imap_command_finished
}
namespace {
  inbox = yes
  location = 
  mailbox Archive {
    auto = no
    special_use = \Archive
  }
  mailbox Archives {
    auto = no
    special_use = \Archive
  }
  mailbox "Deleted Messages" {
    auto = no
    special_use = \Trash
  }
  mailbox Drafts {
    auto = subscribe
    special_use = \Drafts
  }
  mailbox Junk {
    auto = subscribe
    special_use = \Junk
  }
  mailbox "Junk E-mail" {
    auto = no
    special_use = \Junk
  }
  mailbox Sent {
    auto = subscribe
    special_use = \Sent
  }
  mailbox "Sent Items" {
    auto = no
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    auto = no
    special_use = \Sent
  }
  mailbox Spam {
    auto = no
    special_use = \Junk
  }
  mailbox Trash {
    auto = subscribe
    special_use = \Trash
  }
  prefix = 
  separator = /
  type = private
}
namespace {
  list = children
  location = maildir:%%Lh/Maildir/:INDEX=%%Lh/Maildir/Shared/%%u
  prefix = Shared/%%u/
  separator = /
  subscriptions = yes
  type = shared
}
passdb {
  args = /etc/dovecot/dovecot-ldap.conf
  driver = ldap
}
passdb {
  args = /etc/dovecot/dovecot-master-users
  driver = passwd-file
  master = yes
}
plugin {
  acl = vfile
  acl_shared_dict = proxy::acl
  auth_socket_path = /var/run/dovecot/auth-master
  last_login_dict = proxy::lastlogin
  last_login_key = # hidden, use -P to show it
  mail_log_events = delete undelete expunge copy mailbox_create mailbox_delete mailbox_rename
  mail_log_fields = uid box msgid size from subject flags
  mailbox_alias_new = Sent Messages
  mailbox_alias_new2 = Sent Items
  mailbox_alias_old = Sent
  mailbox_alias_old2 = Sent
  quota = dict:user::proxy::quotadict
  quota_grace = 50MB
  quota_status_nouser = DUNNO
  quota_status_overquota = 552 5.2.2 Mailbox is full
  quota_status_success = DUNNO
  quota_warning = storage=100%% quota-warning 100 %u
  quota_warning2 = storage=99%% quota-warning 99 %u
  quota_warning3 = storage=98%% quota-warning 98 %u
  sieve = /var/vmail/sieve/%Ld/%Ln/dovecot.sieve
  sieve_before = /var/vmail/sieve/dovecot.sieve
  sieve_dir = /var/vmail/sieve/%Ld/%Ln
  sieve_global_dir = /var/vmail/sieve
  sieve_max_redirects = 30
  sieve_vacation_send_from_recipient = yes
}
protocols = pop3 imap sieve lmtp
service anvil {
  client_limit = 2903
}
service auth {
  client_limit = 3500
  unix_listener /var/spool/postfix/private/dovecot-auth {
    group = postfix
    mode = 0666
    user = postfix
  }
  unix_listener auth-master {
    group = vmail
    mode = 0666
    user = vmail
  }
  unix_listener auth-userdb {
    group = vmail
    mode = 0660
    user = vmail
  }
}
service dict {
  unix_listener dict {
    group = vmail
    mode = 0660
    user = vmail
  }
}
service imap-login {
  inet_listener imap {
    port = 143
  }
  inet_listener imaps {
    port = 993
    ssl = yes
  }
  process_limit = 1200
  process_min_avail = 3
  service_count = 1
}
service lmtp {
  executable = lmtp -L
  inet_listener lmtp {
    address = 127.0.0.1
    port = 24
  }
  process_min_avail = 5
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0600
    user = postfix
  }
  user = vmail
}
service managesieve-login {
  inet_listener sieve {
    address = 127.0.0.1
    port = 4190
  }
}
service pop3-login {
  process_limit = 500
  service_count = 1
}
service quota-status {
  client_limit = 1
  executable = quota-status -p postfix
  inet_listener {
    address = 127.0.0.1
    port = 12340
  }
}
service quota-warning {
  executable = script /usr/local/bin/dovecot-quota-warning.sh
  unix_listener quota-warning {
    group = vmail
    mode = 0660
    user = vmail
  }
}
service stats {
  fifo_listener stats-mail {
    mode = 0644
    user = vmail
  }
  inet_listener {
    address = 127.0.0.1
    port = 24242
  }
  unix_listener stats-writer {
    group = vmail
    mode = 0660
    user = vmail
  }
}
ssl_ca = </etc/ssl/certs/chain.pem
ssl_cert = </etc/ssl/certs/iRedMail.crt
ssl_cipher_list = EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
ssl_min_protocol = TLSv1.2
ssl_prefer_server_ciphers = yes
syslog_facility = local5
userdb {
  args = /etc/dovecot/dovecot-ldap.conf
  driver = ldap
}
protocol lda {
  auth_socket_path = /var/run/dovecot/auth-master
  lda_mailbox_autocreate = yes
  lda_mailbox_autosubscribe = yes
  mail_plugins = quota mailbox_alias acl mail_log notify sieve
}
protocol lmtp {
  lmtp_save_to_detail_mailbox = yes
  mail_plugins = quota mailbox_alias acl mail_log notify sieve
  recipient_delimiter = +
}
protocol imap {
  imap_client_workarounds = tb-extra-mailbox-sep
  mail_max_userip_connections = 40
  mail_plugins = quota mailbox_alias acl mail_log notify imap_quota imap_acl last_login
}
protocol pop3 {
  mail_max_userip_connections = 30
  mail_plugins = quota mailbox_alias acl mail_log notify last_login
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
  pop3_uidl_format = %08Xu%08Xv
}

# telnet mail.example.org 110
Trying mail.example.org...
Connected to mail.example.org.
Escape character is '^]'.
+OK Dovecot (Debian) ready

# telnet mail.example.org 143
Trying mail.example.org...
Connected to mail.example.org.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ STARTTLS LOGINDISABLED] Dovecot (Debian) ready.