Erik de Castro Lopo:
> Is there a way to detect and reject any email from IP addresses
> falsly claiming to be localhost?
check_reverse_client_hostname_access type:table
Search the specified access database for the unverified reverse
client hostname, parent domains, client IP address, or networks
obtained by stripping least significant octets. See the
access(5) manual page for details. Note: a result of "OK" is
not allowed for safety reasons. Instead, use DUNNO in order to
exclude specific hosts from blacklists. This feature is avail-
able in Postfix 2.6 and later.
Wietse
