ISPs blocking SMTP connections from dynamic IP address space
Dan Nelson
dnelson at allantgroup.com
Wed Aug 6 10:26:55 PDT 2003
In the last episode (Aug 06), Bill Campbell said:
> On Wed, Aug 06, 2003 at 11:19:57AM -0500, Doug Poland wrote:
> >Within the last two months both AOL and Time Warner Road Runner have
> >implemented port 25 blocks from hosts with IP addresses in the
> >"dynamic address space". Time Warner claims other major ISPs
> >are/will be implementing the same policy.
> >
> >Is anyone else uneasy with this trend? Maybe it's just me and I
> >don't like being discriminated against because I don't have the
> >money to own static IP addresses. One would think groups of
> >responsible and technically competent users would be organizing
> >against this trend and attempting to make their voice heard.
>
> For every *bsd/Linux/Unix user who has enough clue to run servers
> properly, there are thousands of clueless folks who connect their
> Microsoft Windows viruses directly to the Internet where they're
> subject to abuse from the outside world.
Right; I've blocked most broadband domains and bouce an awful lot of
spam. In the last 12 hours, I've blocked 121 spams this way (about 10%
of the total blocked spam). I don't block by IP range, just domain;
emails from people that have set up forward and reverse DNS pointing to
their own domain pass right through.
Whenever a customer complains, I point them to their ISP's help pages.
For example, business RoadRunner users should be relaying their outgoing
emails through smtp.biz.rr.com, according to
http://www.help.rr.com/getpage.asp?/faqs/e_biz_emailserveraddysbc.html.
--
Dan Nelson
dnelson at allantgroup.com
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