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RE: several messages

2008-11-13 10:55:10
There is no doubt that email addresses are indeed sticky for most people.
However as someone who works for a mid to large ISP, I can say with
confidence that using 'reputable' DNSBL's save money for the ISP and the
customer as well.

To give an example; previous to our Spamhaus deployment we were processing
over 90M msg per day. After deploying SBL alone that dropped to 10M! This
resulted in not having to buy hundreds of servers and terabytes of disk. If
we had not implemented DNSBLs we would have to raise our costs to the
subscriber to cover the capital expenditure.

Our FP complaints from our subscribers was less than 10 calls in the first
six months. After modifying our DSN's to provide clear language to senders
why we did not accept their message, and giving them a link to resolve the
issue on their own, the complaints from customers disappeared.

So yes, you will always have someone that will be affected. It is my belief
(solely) that mail system managers need to take responsibility for what
flows through their systems. If your users are not doing their due
diligence to keep their PCs from becoming zombies, you as the system
manager need to protect your systems, so you can ensure that everyone can
use them. 

My $.02

Regards,
Anthony

On Thu, 13 Nov 2008 06:43:17 -0800, "Hallam-Baker, Phillip"
<pbaker(_at_)verisign(_dot_)com> wrote:
This is a somewhat silly discussion, pretty much the ONLY real reason to
use your own domain rather than a gmail or aol or whatever is precisely
the
fact that switching costs are high.
 
And the real problem is not gmail.com but comcast.net. If access to the
email address requires continuation of an ISP service the switching cost
issue bcomes a very real problem. Even more so if the ISP decides to
rename
itself - as mine has three times.
 

________________________________

From: ietf-bounces(_at_)ietf(_dot_)org on behalf of David Morris
Sent: Thu 11/13/2008 12:02 AM
To: Al Iverson
Cc: ietf(_at_)ietf(_dot_)org
Subject: Re: several messages





On Wed, 12 Nov 2008, Al Iverson wrote:

On Wed, Nov 12, 2008 at 11:37 PM, David Morris <dwm(_at_)xpasc(_dot_)com> 
wrote:


On Wed, 12 Nov 2008, Al Iverson wrote:

On Wed, Nov 12, 2008 at 11:08 PM, David Morris <dwm(_at_)xpasc(_dot_)com> 
wrote:

In the end, walking isn't a viable alternative.

Because it's so hard to open a Gmail account? I think your thinking
here is about two generations out of date. Back in 1995 when we each
had our one dialup account, and webmail was much less common and
acceptable, your point would have been more valid.

C'mon ... my example contractor has printed collateral, web pages,
etc.
all with his email address. Changing an email address is non-trivial
for
folks who don't have any need to register their own domain name. Even
those who have a web serving domain often have no business need for
email.

The professional who has printed their AOL.com email address on their
business card has problems that are far greater than, and not unique
to, an ISP's use of DNSBLs.

I never said they used aol.com ... only that it was a major ISP. Both
that
ISP and aol *HAVE* worked to deal with issues I've had. Other ISPs have
not. It was still a waste of my time.

My point is that it is difficult to change email addresses because there
are lots of references which have value. Business cards are one example.
All other business printed materials are another. Every customer's mail
folders are another.

Simply walking from an ISP isn't an easy choice. This is particularily
true for folks for home computer technology is simply a tool they use to
communicate. This general issue is well enough understood that the FCC
forced phone companies and cellular carriers to provide number
portability
to insure folks with an investment in their phone number could take
advantage of competition.

Dave Morris
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