A client is complaining of getting a large amount of spam from Indian-based firms trying to sell their "cheap" offshore services. Is there any easy way of blocking *ALL* of India's IP addresses, or do general country-level blocking?
you can generally look online and find the /8's allocated. Simply block all the /8's that pertain to the given country. Best bet is to look at the headers of the email find the ip it can from then simply block the whole /8 : P We did this for veitnam at one point.
do something like this
ipfw add deny tcp from 220.127.116.11/8 to any
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