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11-11-2008, 09:59 AM
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#1
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Member
Registered: Dec 2001
Location: Scotland
Distribution: Slackware 9.1-15 RH 6.2/7, RHEL 6.5 SuSE 8.2/11.1, Debian 10.5
Posts: 518
Rep:
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Spamassassin problem/query
I'm looking for some serious help here, as i am getting way too much spam through over the past few weeks.
My setup is simple, a small slackware server running mail, ftp and ftp, nothing too complicated in itself.
I have only a few mail acocunts on there and retrieve my mail generally on a windows machine using Outlook.
I'm running spamassassin and have been for a number of years now but of late, just too much is getting through.
The main problem, is I have my own email address on a whitelist, because I tend to send things to myself, when working away from home etc. but I am now getting mail/spam which is apparently from myself, its obviously not though but the fact that it is saying so if screwing up my rules and mails that should be spam are getting through.
Any suggestion?
Thanks in advance...
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11-11-2008, 04:58 PM
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#2
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LQ 5k Club
Registered: May 2003
Location: London, UK
Distribution: Fedora40
Posts: 6,153
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Quote:
but I am now getting mail/spam which is apparently from myself,
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This is a new scam. Do you by any chance have BT as your ISP?
Many linux users I support are reporting this to me, and I have had it too.
My suggestion: Set up a rule for your email client that says "If it's From: Me and To: Me them move to SPAM.
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11-11-2008, 05:07 PM
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#3
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LQ Guru
Registered: Mar 2006
Location: Sydney, Australia
Distribution: Fedora, CentOS, OpenSuse, Slack, Gentoo, Debian, Arch, PCBSD
Posts: 6,678
Rep: 
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You should also make sure that you are using the Bayesian learning capabilities and that you are training SA on these latest spams you are receiving.
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11-12-2008, 12:35 PM
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#4
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Member
Registered: Aug 2003
Location: Washington State, USA
Distribution: Mainly RH 9.0
Posts: 227
Rep:
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As a side note, I have found that spammers like to send dictionary attacks against my server. They'll send an email to aaron@mydomain.com, abott@mydomain.com and so on.
I have found that fail2ban works wonderfully in these instances. What it does is look through the log file in real time for anything you configure it for (I did the 450 error codes 5 times within 10 minutes), and ban the ip address for 24 hours.
Of course, it's completely configurable to your own tastes. I don't know if it'll help in your situation, but once I did that, my spam went down about 80% at my company. Hope that helps!
Travis
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