smtp and Road Runner

[Gerald Combs]

On Tue, 21 Jan 2003, Duane Attaway wrote:

> On Tue, 21 Jan 2003, jose sanchez wrote:
> 
> > Is it true that Time Warner RR blocks all smtp
> > requests so people can't host their own mail server?
> 
> If that was true, you would not be receiving this email.
> 
> I remember redhat had a default setting in the sendmail configuration to
> only listen to localhost on port 25 in addition to the ipchains AND
> iptables firewall rules.  This gave me the appearance of an ISP that
> blocks ports, which was not true.

One danger of running an SMTP server on your cable modem is that you may
show up in various blocking lists, particularly the MAPS dialup user list:

    http://www.mail-abuse.org/dul/

AFAIK, Road Runner addresses aren't in the DUL but ComCast addresses are.
This is causing consternation for a couple of our clients.