> Is there a debug/verbose setting in postfix to enforce > that every such dns error is logged? I'm aware that this will lead to > much more log output but for tracking dns issues it could be helpful.
http://www.postfix.org/postconf.5.html#debug_peer_level http://www.postfix.org/postconf.5.html#debug_peer_list http://www.postfix.org/DEBUG_README.html It is extreme how verbose the logging gets, over 100 lines per "event".
