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Re: (OT) ISP's that don't allow relaying
- To: Refael Ackermann <mose(at-nospam)netvision.net.il>
- Subject: Re: (OT) ISP's that don't allow relaying
- From: Shachar Shemesh <linuxil(at-nospam)consumer.org.il>
- Date: Sun, 16 Dec 2001 15:26:24 +0200
- CC: Oded Arbel <oded(at-nospam)geek.co.il>, linux-il(at-nospam)linux.org.il
- Delivered-To: linux.org.il-linux-il@linux.org.il
- References: <5.1.0.14.2.20011216145818.027839c0@in.inter.net.il>
- Sender: linux-il-bounce(at-nospam)cs.huji.ac.il
- User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.6) Gecko/20011120
Refael Ackermann wrote:
> I'm using mailgw.netvision.net.il, and Eudora as client.
> To be more specific about what I've figured as the needed header format:
> The header must contain a valid netvision address anywhere (including
> the "To" field).
> Theoreticly searching the acount names DB shouldn't be more
> complicated then searching the IP range.
> And af far as being "spam freindly", it is, but it's allso useful for
> me as a legitimate user.
>
But for how long?
The interesting thing about this technique is that it allows netvision
to pass the RBL tests, because they don't guess correctly the right user
name. As soon as that is fixed (i.e. - as soon as spam starts going
through them), your mail is going to be black-holed by people. This will
happen regardless of whether you are working from within the netvision
IPs or not.
Shachar
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