Søren Schrøder schrieb: > On Tue, Jun 30, 2009 at 12:05, Ralf > Hildebrandt<ralf.hildebra...@charite.de> wrote: > >> $ host 87.53.72.254 >> 254.72.53.87.in-addr.arpa domain name pointer mail.viauc.dk. >> $ host mail.viauc.dk >> mail.viauc.dk has address 87.53.72.234 >> >> 87.53.72.254 != >> 87.53.72.234 >> > > I got that point, but what tricks me is the "Client host rejected: > cannot find your hostname, [87.53.72.254]" logentry. >
This is because the address<->name<->address verification fails. Look for the difference between reject_unknown_client_hostname and reject_unknown_reverse_client_hostname. Everything is explained there: [1] http://www.postfix.org/postconf.5.html#reject_unknown_client_hostname [2] http://www.postfix.org/postconf.5.html#reject_unknown_reverse_client_hostname
