VMM: renamed function chk_domainname() -> check_domainname().
Moved EmailAddress.check_localpart() -> VirtualMailManager.check_localpart().
Some small code cleanups in class EmailAddress.
# 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=SELECTuidFROMpostfix_uidWHEREaddress='%s'