[Dovecot] Feature: Move authentication to LUA and prepare for http based authentication, log last SASL logins to SQL

data/conf/dovecot/dovecot.conf

@@ -45,36 +45,25 @@ recipient_delimiter = +
 auth_master_user_separator = *
 mail_shared_explicit_inbox = yes
 mail_prefetch_count = 30
+passdb {
+  driver = lua
+  args = file=/etc/dovecot/lua/passwd-verify.lua blocking=yes
+  result_success = return-ok
+  result_failure = continue
+  result_internalfail = continue
+}
 # try a master passwd
 passdb {
   driver = passwd-file
   args = /etc/dovecot/dovecot-master.passwd
   master = yes
-  pass = yes
-  result_failure = continue
-  result_internalfail = continue
-}
-# try an app passwd
-passdb {
-  driver = lua
-  args = file=/etc/dovecot/lua/app-passdb.lua blocking=yes
-  pass = yes
-  result_failure = continue
-  result_internalfail = continue
+  skip = authenticated
 }
 # check for regular password - if empty (e.g. force-passwd-reset), previous pass=yes passdbs also fail
 # a return of the following passdb is mandatory
 passdb {
-  args = /etc/dovecot/sql/dovecot-dict-sql-passdb.conf
-  driver = sql
-  result_success = return-ok
-  result_failure = continue
-  result_internalfail = continue
-}
-passdb {
-  driver = passwd-file
-  args = /etc/dovecot/dovecot-master.passwd
-  skip = authenticated
+  driver = lua
+  args = file=/etc/dovecot/lua/passwd-verify.lua blocking=yes
 }
 # Set doveadm_password=your-secret-password in data/conf/dovecot/extra.conf (create if missing)
 service doveadm {