Thanks for your swift answers I'll try the recommendations immediately.
English is not my native language - but it did not occour to me from reading that documentation for tcp_table lookups that returning 500 would be aproprialte - I would have believed that is would have stopped the while delivery "transaction". Rereading the docs as we speak makes it more clear - thx -- View this message in context: http://postfix.1071664.n5.nabble.com/Problem-understanding-check-client-access-and-tcp-table-tp68481p68487.html Sent from the Postfix Users mailing list archive at Nabble.com.