VMM/Handler: Implemented Handler._chk_other_address_types().
Removed the static methods accountExists(), aliasExists(), relocatedExists()
and _exists().
# All parameters are described in pgsql_table(5) / PGSQL PARAMETERS## The hosts that Postfix will try to connect to and query from.hosts=localhost# The user name and password to log into the pgsql server.user=postfixpassword=some_password# The database name on the servers.dbname=mailsys# The SQL query template used to search the databasequery=SELECTdestinationFROMpostfix_aliasWHEREaddress='%s'