Am 08.05.2013 01:07, schrieb Vincent Lefevre: > On 2013-05-07 15:50:33 +0200, Robert Schetterer wrote: >> Am 07.05.2013 14:14, schrieb Vincent Lefevre: >>> A whitelist is not possible as in general, I don't know who >>> sends me such mail >> >> it is possible >> what about reading logs and/or mail headers ? > > I meant that it may be a completely new user, who has never sent me > mail before. So, there can't be any trace in the logs to be able to > whitelist the IP before I get the first mail... Or I need a time > machine. :) >
Ok, i understand, but however that user will get a bounce which ist not something evil, you should always have an alternative call channel open for support things, i.e a website with i.e some mail script and faqs if problems with your mailserver apear, you should learn problems are normal , its your job to fix them as postmaster at last ,qualified support to your problem was given, i see no need for longing this thread you should learned for real reject_unknown_reverse_client_hostname is most safe to use, and its massive practise by big mail players, anyone who didnt care will end in massive bounces as reciept ,in rare urgent cases "you" may whitelist ips at your servers. However nobody presses you to use this parameter, for more clever use you may combine it with restriction classes selective only for dyn ips etc if you dont like what you allready read , only barking at moon might be a solution *g Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
