Jorey Bump schrieb: > Robert Schetterer wrote, at 08/03/2009 03:40 PM: > >> lost mail to where ? gone universe ....*g? >> the mail got rejected at last with a debug code >> so the sender may take his brain to fix its problem >> or try to reach you by phone , valid mailservers etc >> if the sender cant fix it you can simply whitelist >> them by ip or else for reject_unknown_reverse_client_hostname >> mail must always be supported >> using reject_unknown_reverse_client_hostname is relativly save these >> spam days ,shows every day work here, the few problems a year are easy >> to fix, make sure that you have very good dns resolves ( i.e use local >> dns cache too) >> i changed the reject code to 550, to let senders know at once about the >> the problem, for fighting bots it very effective ,and dont break your head >> about crying users behind if the senders cant show bounces and call it >> lost mail *g > > In this particular case, human senders are rarely the issue. As you > suggest, they will often find ways to communicate to the recipient that > there is a problem. Unfortunately, a substantial portion of the messages > rejected by reject_unknown_(reverse_)client_hostname are sent by > automated processes using misconfigured software or machines that bypass > the more sensibly configured relays for a domain.
yes i know many mailling services from big companies who missed the reverse dns, but its their problem, after all if they cant get out their mail it should finally bounce to someone responsable ,and then they should react, mail must be supported ever, looking logs is daily work, there are scripts which help, if i find something i mean to whitelist i can do ever, or if someone from my reciepts tells me to look at, i see no problem with thousends of mail boxes here, nobody can create the ultimate solution which fixes all thinkable problems, ever admin has to decide whats fits best to his needs , here nearly no mails which was rejected by unknown reverse was needed or asked for and mostly i know the senders very well *g but why should i support others problems not asked by my reciepts Nobody will attempt to > contact the recipient, who will often determine there is a problem when > it is too late. Maintaining whitelists isn't an attractive option when > there is already too much guesswork involved. > -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria
