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How do I filter out any domain with "adsl

Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
URL: https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=5393
Printed Date: 13 March 2025 at 5:39pm


Topic: How do I filter out any domain with "adsl
Posted By: Stupid
Subject: How do I filter out any domain with "adsl
Date Posted: 28 November 2005 at 1:21pm

How do I filter out any domain with "adsl" as domain name? or domains like rr.com?

I have these filters under "Domains", but none seems to work:

(.+\.tmp.+.+\.dsl\-verizon\.net):nondr

(adsl\-.+\-.+\-.+\-.+\..+.(.+)\.(swbell|pacbell)\.net):nondr

(.+\.(client2|client|dhcp|adsl)\..+\.(net|com|biz|org)):nond r

 


Replies:
Posted By: Stupid
Date Posted: 30 November 2005 at 10:36am
anybody? Please...

Posted By: Stupid
Date Posted: 02 December 2005 at 12:49pm
Sorry, I didn't mean to be annoying anybody. Is this something that I cannot do or I did not do it right?

Posted By: Stupid
Date Posted: 10 December 2005 at 11:52am

I figured out how to do this:

(.*\..*(dsl|dhcp).*\..*\..*):null
(.(dsl|dhcp).*\..*\..*):null
(.*(dsl|dhcp).*\..*\..*\..*):null

However, the Blacklist domain is NOT the resolved reverse DNS??? It seems to be the fak reply spammers put in. For example, if they put in mailto:admin@fbi.gov - admin@fbi.gov , the domain is fbi.gov???

Can somebody clear this up for me?

Posted By: LogSat
Date Posted: 10 December 2005 at 12:10pm
I'm not sure what the question is. Please note that a (legitiimate) single mail server can handle/own thousands of domains. So from a single IP address a mail server can send out emails with thousands of different domains. A reverse lookup on the server's IP address will only return a single domain, and so it will not match the remaining thousands. SpamFilter can check for the existance of a reverse DNS entry, but it will not force it to match to the email's domain, as we'd be stopping huge amounts of legitimate mail.

-------------
Roberto Franceschetti

http://www.logsat.com" rel="nofollow - LogSat Software

http://www.logsat.com/sfi-spam-filter.asp" rel="nofollow - Spam Filter ISP

Posted By: Guests
Date Posted: 10 December 2005 at 4:23pm

For example,

IP: 123.123.123.123

Reverse DNS: abc.spammer.com

Reply-To: mailto:john@fbi.gov - john@fbi.gov

Now, the Black List domain is what? abc.spammer.com or the fbi.com?

Posted By: LogSat
Date Posted: 10 December 2005 at 4:31pm
It's the email domain, fbi.com.

-------------
Roberto Franceschetti

http://www.logsat.com" rel="nofollow - LogSat Software

http://www.logsat.com/sfi-spam-filter.asp" rel="nofollow - Spam Filter ISP

Posted By: Guests
Date Posted: 10 December 2005 at 7:44pm
Would be nice if it's the reverse DNS domain name. Lots spammers are sending emails via either DSL or cable.

Posted By: LogSat
Date Posted: 10 December 2005 at 9:19pm
Please see our previous answer in this thread. It's impossible to do as it would block *huge* amounts of legitimate mail. If you're worried about DSL/cable users, several RBL already list dynamic IPs, and SpamFilter can use their MAPS RBL servers to block such emails.

-------------
Roberto Franceschetti

http://www.logsat.com" rel="nofollow - LogSat Software

http://www.logsat.com/sfi-spam-filter.asp" rel="nofollow - Spam Filter ISP


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