Hi,
A lot of spam comes from certain ip ranges (e.g. west africa) through
relays (large ISPs) that would be too onerous to block. To filter these
I am presently matching:
/^((Received|X-Originating-IP):.+\b(124\.120\.1\.(<IP RANGE IN
REGEX>)\b/
in pcre:/etc/postfix/header_access. But converting IP ranges to regex'es
is time consuming and error prone.
Is there a way to use a cidr table for header matching while retaining
control of the prefix ^(Received|X-Originating-IP) ?
Or another better way?
Thanks,
