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> Need Help Against Spaming, spaming with @yahoo.com domain
orko
post Aug 23 2005, 02:12 PM
Post #1


Whats this Lie-nix Thing?
*

Group: Members
Posts: 15
Joined: 24-November 03
From: Chittagong, Bangladesh
Member No.: 1,861



hi all,

i m using sendmail-8.12.8-4 in my RedHat Mail server. part of my /etc/mail/sendmail.mc for spam filtering is as followings:
-----------------------------------------
FEATURE(`dnsbl', `list.dsbl.org', `"550 Mail from " $`'&{client_addr} " refused - see http://dsbl.org/"')dnl
FEATURE(`dnsbl', `bl.spamcop.net', `"550 Mail from " $`'&{client_addr} " refused - see http://spamcop.net/bl.shtml"')dnl
FEATURE(`dnsbl', `blackholes.easynet.nl', `"550 Mail from " $`'&{client_addr} " refused - see http://abuse.easynet.nl/blackholes.html"')dnl
FEATURE(`dnsbl', `blackholes.mail-abuse.org', `"550 Mail from " $`'&{client_addr} " refused - see http://mail-abuse.org"')dnl
FEATURE(`dnsbl', `sbl.spamhaus.org', `"550 Mail from " $`'&{client_addr} " refused - see http://www.spamhaus.org/sbl/"')dnl
------------------------------------------

its working nicely but it cant stop spaming where the return email address is @yahoo.com . spam emails are coming with a return address blabla@yahoo.com. here is a Header of a spam mail :

----------------------------
Return-Path: <fnghvwfwwnq@yahoo.com>
Received: from mail.fnfbd.net (na-200-78-239-30.na.avantel.net.mx [200.78.239.30] (may be forged))
by ns1.fnfbd.net (8.12.8/8.12.8) with SMTP id j7O5REGp027867
for <sabbir@fnfbd.net>; Wed, 24 Aug 2005 01:27:25 -0400
Date: Wed, 24 Aug 2005 01:27:18 -0400
Message-Id: <200508240527.j7O5REGp027867@ns1.fnfbd.net>
From: fnghvwfwwnq@yahoo.com
To: sabbir@fnfbd.net
Content-type: text/html
Subject: Only best sex
-------------------------------

denying mail from ip 200.78.239.30 from access list will not work as this kind of mail are comming from differnet ips with an address of something@yahoo.com to my_user_address@fnfbd.net . and i cant also denied the whole yahoo domain.

the /var/log/maillog says:
---------------------------------------------------------
Aug 24 02:10:52 ns1 sendmail[28348]: j7O6ACGp028348: from=<vruevrjtrhb@yahoo.com>, size=739, class=0, nrcpts=1, msgid=<200508240610.j7O6ACGp028348@ns1.fnfbd.net>, proto=SMTP, daemon=MTA, relay=201009208157.user.veloxzone.com.br [201.9.208.157]
Aug 24 02:10:52 ns1 sendmail[28349]: j7O6ACGp028348: to=<maruf@fnfbd.net>, delay=00:00:21, xdelay=00:00:00, mailer=local, pri=31045, dsn=2.0.0, stat=Sent
---------------------------------------------------------
anyone have any idea ??
thanx in advance
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DS2K3
post Aug 23 2005, 05:25 PM
Post #2


Its GNU/Linuxhelp.net
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Group: Support Specialist
Posts: 1,284
Joined: 14-November 04
From: Southampton, Hampshire
Member No.: 4,165



Are you using SPamAssasin? If not, then it might be an idea to iosntall it, that way the content of the email will vbe scanned to try and determine if it is SPAM or not.

D


--------------------
Fixed your problem? Let us know!
richard@linuxhelp.net

www.Gathr.co.uk Online Event Management
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orko
post Aug 24 2005, 11:51 AM
Post #3


Whats this Lie-nix Thing?
*

Group: Members
Posts: 15
Joined: 24-November 03
From: Chittagong, Bangladesh
Member No.: 1,861



installed spamassassin. but found no easy guideline to configure it. any help will be appriciated.

thanx
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