Re: Abuse procedures... Reality Checks

[Leigh Porter <leigh.porter () ukbroadband com>]

Mikael Abrahamsson wrote:
> On Wed, 11 Apr 2007, Frank Bulk wrote:
>
> > It truly is a wonder that Comcast doesn't apply DOCSIS config file
> > filters
> > on their consumer accounts, leaving just the IPs of their email servers
> > open.  Yes, it would take an education campaign on their part for all
> > the
> > consumers that do use alternate SMTP servers, but imagine how much
> > work it
> > would save their abuse department in the long run.
>
> There are several large ISPs (millions of subscribers) that have done
> away with TCP/25 altogether. If you want to send email thru the ISPs
> own email system you have to use TCP/587 (SMTP AUTH).
>
> Yes, this takes committment and resources, but it's been done
> successfully.

You don't even need to do that. We just filter TCP/25 outbound and force
people to use our mail servers that have sensible rate limiting etc.
People who use alternate SMTP servers can fill in a simple web form to
have them added to the exception list. We have about 50 on this list so far.

--
Leigh Porter