Great Circle Associates List-Managers
(March 1995)
 

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Subject: Re: suspicious looking subscribe message points to 800 fax gateways
From: Keith Moore <moore @ cs . utk . edu>
Date: Fri, 10 Mar 1995 00:16:57 -0500
To: Kjetil Torgrim Homme <kjetilho @ ifi . uio . no>
Cc: list-managers @ greatcircle . com, moore @ cs . utk . edu
In-reply-to: Your message of "Fri, 10 Mar 1995 05:12:11 +0100." <199503100412.28570.surt.ifi.uio.no@ifi.uio.no>

>|   a) tpc.int is a group of people who have volunteered their systems
>|   to deliver faxes/pages to local phone numbers, and certainly not
>|   under any central control.
>
> So why don't they block numbers which cost money? Aren't they easily
> recognizable?

Calls to numbers with the U.S. 800 area code are billed to the called
party.  That's why the subscribe request looked suspicious.  Lots of
places have 800 numbers for their fax machines so that their customers
can send them faxes for free.  But it doesn't make much sense to have
the info-mime mailing list faxed to your 800 number (where you have to
pay for the call) when you could probably get them for free using a
different number.  (It makes even less sense if there's no fax machine
at that number...)

At any rate, the people who manage the TPC.INT domain have since
blocked faxes from the Internet to that particular 800 number.

I only mentioned it on list-managers because I had reason to believe
that the same number was being subscribed to other lists also, and I
wanted to stop or limit the abuse as quickly as possible.

Keith


References:
Indexed By Date Previous: Re: suspicious looking subscribe message points to 800 fax gateways
From: Chris G Demetriou <Chris_G_Demetriou@LAGAVULIN.PDL.CS.CMU.EDU>
Next: List Moderation and Profanity
From: Linda Henneman <frugal@best.com>
Indexed By Thread Previous: Re: suspicious looking subscribe message points to 800 fax gateways
From: Chris G Demetriou <Chris_G_Demetriou@LAGAVULIN.PDL.CS.CMU.EDU>
Next: List Moderation and Profanity
From: Linda Henneman <frugal@best.com>

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