Dovecotの設定内容を確認するには、dovecot コマンドのオプション -nを使用します。
なお、出力される内容は、デフォルトの設定からの変更点のみ出力されます。

# dovecot -n
# 2.0.9: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-431.11.2.el6.x86_64 x86_64 CentOS release 6.5 (Final) ext4
auth_debug = yes
auth_debug_passwords = yes
auth_mechanisms = PLAIN LOGIN
disable_plaintext_auth = no
first_valid_gid = 10000
first_valid_uid = 10000
listen = *
log_path = /var/log/dovecot.log

mail_plugins = quota
mbox_write_locks = fcntl
passdb {
  args = /etc/dovecot/dovecot-postfixadmin-mysql.conf
  driver = sql
}
plugin {
  quota = maildir:User quota
}
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
}
ssl = no
userdb {
  args = /etc/dovecot/dovecot-postfixadmin-mysql.conf
  driver = sql
}
protocol imap {
  imap_client_workarounds = delay-newmail tb-extra-mailbox-sep
  mail_plugins = quota imap_quota
}
protocol pop3 {
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
}

 

[対象]
CentOS 6.X
dovecot 2.X.X