dovecot: migrated config to 2.4 + config splitting

data/conf/dovecot/conf.d/25-services.conf

@@ -0,0 +1,135 @@
+# /etc/dovecot/conf.d/25-services.conf
+# All service listeners and workers.
+
+# doveadm remote admin
+# Set doveadm_password in extra.conf.
+service doveadm {
+  inet_listener doveadm {
+    port = 12345
+  }
+  vsz_limit = 2048 MB
+}
+
+# dict
+service dict {
+  unix_listener dict {
+    mode = 0660
+    user = vmail
+    group = vmail
+  }
+}
+
+# log
+service log {
+  user = dovenull
+}
+
+# config socket
+service config {
+  unix_listener config {
+    user = root
+    group = vmail
+    mode = 0660
+  }
+}
+
+# auth sockets and inet
+service auth {
+  inet_listener auth-inet {
+    port = 10001
+  }
+  unix_listener auth-master {
+    mode = 0600
+    user = vmail
+  }
+  unix_listener auth-userdb {
+    mode = 0600
+    user = vmail
+  }
+  vsz_limit = 2G
+}
+
+# managesieve login
+service managesieve-login {
+  inet_listener sieve {
+    port = 4190
+  }
+  inet_listener sieve_haproxy {
+    port = 14190
+    haproxy = yes
+  }
+  service_restart_request_count = 1
+  process_min_avail = 2
+  vsz_limit = 1G
+}
+
+# imap login
+service imap-login {
+  service_restart_request_count = 1
+  process_min_avail = 2
+  process_limit = 10000
+  vsz_limit = 1G
+  user = dovenull
+  inet_listener imap_haproxy {
+    port = 10143
+    haproxy = yes
+  }
+  inet_listener imaps_haproxy {
+    port = 10993
+    ssl = yes
+    haproxy = yes
+  }
+}
+
+# pop3 login
+service pop3-login {
+  service_restart_request_count = 1
+  process_min_avail = 1
+  vsz_limit = 1G
+  inet_listener pop3_haproxy {
+    port = 10110
+    haproxy = yes
+  }
+  inet_listener pop3s_haproxy {
+    port = 10995
+    ssl = yes
+    haproxy = yes
+  }
+}
+
+# imap worker
+service imap {
+  executable = imap
+  user = vmail
+  vsz_limit = 1G
+}
+
+# managesieve worker
+service managesieve {
+  process_limit = 256
+}
+
+# lmtp
+service lmtp {
+  inet_listener lmtp-inet {
+    port = 24
+  }
+  user = vmail
+}
+
+# quota warning hook
+service quota-warning {
+  executable = script /usr/local/bin/quota_notify.py
+  user = vmail
+  unix_listener quota-warning {
+    user = vmail
+  }
+}
+
+# stats
+service stats {
+  unix_listener stats-writer {
+    mode = 0660
+    user = vmail
+  }
+}