silas_nbli...@nocafe.net wrote: > > IIUC, it is possible to implement Reverse DNS validation with > postfix tools in base system with some Postfix option (I've seen > that, but I don't recall the exact postfix setting)
postfix main.cf:
smtpd_client_restrictions =
...
reject_unknown_client_hostname
...
sendmail.mc:
FEATURE(`require_rdns') dnl see also: delayed_checks
Martin Neitzel
