--On 1 July 2009 12:55:02 -0400 Dotzero <dotzero(_at_)gmail(_dot_)com> wrote:
IP Addresses are used rather than DNS names because it is
significantly easier to dump a domain name and use a new one than to
dump an IP address (range) and migrate to another unless there are
compromised hosts involved. IP Addresses tend to be more trackable and
ultimately tied to an ISP (even if that carrier is an upstream).
That depends on what you're using it for. For hard-core spammers, it's easy
to do get new domain names. And, they don't seem to have problems getting
hold of IP addresses on compromised hosts, either.
It's harder to get hold of IP addresses or domains with good reputation.
For sloppy marketing people (who also send significant quantities of spam),
it's not so easy to do either.
--
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
For new support requests, see http://www.sussex.ac.uk/its/help/
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