Dovecot

# dovecot -n
# 2.2.rc3: /etc/dovecot/dovecot.conf
# OS: Linux 3.4.0-cloud x86_64 Gentoo Base System release 2.1 ext3
auth_mechanisms = login plain
default_process_limit = 200
disable_plaintext_auth = no
first_valid_gid = 12
first_valid_uid = 8
last_valid_gid = 12
last_valid_uid = 8
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
mail_gid = 12
mail_location = maildir:/var/mail/%d/%n/Maildir/:INDEX=/var/mail/%d/%n/indexes
mail_uid = 8
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
namespace inbox {
  inbox = yes
  location =
  mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    special_use = \Trash
  }
  prefix =
  separator = /
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
plugin {
  autocreate = Trash
  autocreate2 = Spam
  autocreate3 = LearnAsSpam
  autocreate4 = LearnAsHam
  autosubscribe = Trash
  autosubscribe2 = Spam
  autosubscribe3 = LearnAsSpam
  autosubscribe4 = LearnAsHam
  mail_debug = yes
  sieve = /var/mail/%d/%n/dovecot.sieve
  sieve_after = /etc/dovecot/sieve/after/
  sieve_before = /etc/dovecot/sieve/before/
  sieve_dir = /var/mail/%d/%n/sieve
  sieve_global_dir = /etc/dovecot/sieve/global/
}
postmaster_address = postmaster@xxx.com
protocols = imap pop3 sieve
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
  unix_listener auth-userdb {
    group = mail
    mode = 0600
    user = mail
  }
}
service imap {
  process_limit = 1024
}
service pop3 {
  process_limit = 1024
}
ssl_cert = </etc/ssl/private/xxx.com/dovecot.cert.xxx.com.pem
ssl_key = </etc/ssl/private/xxx.com/dovecot.key.xxx.com.pem
userdb {
  driver = prefetch
}
userdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocol lda {
  log_path = /var/log/dovecot-lda.log
  mail_debug = yes
  mail_plugins = sieve autocreate listescape
}
protocol imap {
  mail_plugins = " autocreate listescape"
}
protocol sieve {
  mail_debug = yes
}