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Re: dynamic ip: cold hard facts

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Subject: Re: dynamic ip: cold hard facts
From: Charles Cazabon <qmail@discworld.dyndns.org>
Date: Wed, 31 Jan 2007 09:36:59 -0600
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jason kawaja <kawaja@ece.ufl.edu> wrote:
> > Maybe where you come from.  The last ISP I was with listed all of its
> > customers addresses as "dynamic", even when they weren't, and the  mail
> > server they provided lost ~10% of all mail and regularly introduced 4-5
> > *day* delivery delays to the rest.
> >
> > ISP-provided mail servers have gotten significantly worse over the  last
> > ten years, to the point that simply saying "relay through your ISP's
> > smarthost" is no longer good advice.
> 
> quality of service can degrade anywhere, it's up to the paying  customer
> using the service to demand for better by perhaps switching  providers.

That was in a city with exactly two available ISPs.  The one I describe was
the more popular of the two.  The other's mail servers are no better.  If you
want a pipe from somewhere else, be prepared to trench better than a thousand
miles -- that might cost a few bucks.

> i refuse to "pick up the slack" for someone else's  oversight by subjecting
> my users to an overwhelming amount of  illegitimate (unwanted, etc) email.
> so for the record i am not  offering advice however i am providing
> reasonable justification for  my policy.

We have different definitions of "reasonable", then.

Facts that are not in dispute:

  -not all dynamically-addressed hosts are sources of spam
  
  -blocking mail based on the client being dynamically addressed blocks
  legitimate mail

Charles
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Charles Cazabon                               <qmail@discworld.dyndns.org>
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