Anti-recommendation: Comcast.

John Chambers jc at trillian.mit.edu
Sat Jan 19 22:21:29 EST 2008


Mike Gorse wrote:
| Interesting.  That's ironic.  I used to send mail directly from my
| computer but gave that up a long time ago because there were too many ISPs
| that would block my mail just because they don't like my IP address.

That has been reported frequently by people with  dynamic  IPs.   The
explanation  is  usually  that  someone  using  that address once got
infected by a spambot, and their address was added to the spam lists.
Then  the  ISP  shuffles  the addresses around, but the address stays
listed as a previous spam source. Since it's almost impossible to get
off  such  a  list,  the  fraction of the IP addresses listed as spam
sources is slowly growing.

Of course, this has been proposed as a Good Thing.  The idea is  that
in  a  few  more  years, the various blacklists will include all 2^32
IPv4 addresses, and IPv4 will be close to useless as a result.   This
will be what finally triggers adoption of IPv6.



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