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From: Daniel O'Leary <Daniel_O'Leary@
To: Rusty Tucker <Rusty_Tucker@spid
Subject: Re: Spam blocking??
Date:Wed, September 16, 1998 05:31 AM


On 09/14/1998 01:07 PM, Rusty Tucker wrote:

>TeleFinder logs the "HELO" name, but does not use it.
>"sf-dnpqh-156.compuserve.net" is the name TF uses in spam blocking. It
>is possible that the client machine has both names, you'd need to do a
>complete NS lookup for that.

Hmm. a really cool utility would be to automatically do an NS lookup on any site identified as a SPAM
site and then add the names of all domains it found to the Filtered Domains list, and send the "Postmaster" or "root" a message explaining that mail from their sites will no longer be accepted due to the SPAM content.

>The "MAIL FROM" is whatever the client systyem provides, its not
>necessarily related to the headers in the message. I don't know if it
>is more likely to be different in SPAM or not.

The only legitimate reasons for a difference between "HELO" and "CONNECTED TO:" might be a firewall or proxy or a load balancing scheme involving multiple mail server CPU's. A user can configure their email client to say anything in the "MAIL FROM" especially if they have multiple providers and wish to direct replies to a specific one.
---
Daniel O'Leary, Sysop
KloneZone Mac - A TeleFinder 5.7 Mac/Windows BBS



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