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Legacy Forums => General Discussion (Legacy) => Topic started by: nguyenvannam on May 25, 2005, 04:30:15 AM

Title: Increase protector level spamfilter
Post by: nguyenvannam on May 25, 2005, 04:30:15 AM

I have problem with spamassasin, spamfilter is very weak. Please help me how to solve this problem. I don't want to enable realtime protect because this will reject many useful e-mails.

Title: Re: Increase protector level spamfilter
Post by: raem on May 25, 2005, 04:55:40 AM

nguyenvannam

> I don't want to enable realtime protect because this will reject many useful e-mails

Not sure what you are referring to here. If it is RBL (Real Time Blocklists) then that will reject email you probably don't want !

I don't call email coming from known spam sources "useful", it's the opposite ie not useful.
By using conservative lists then you only reject messages from sources that are clearly identified as spammers.

If you are using Jespers Spam Filter just enable a few RBL lists or alternatively follow the HOWTO here:
http://mirror.contribs.org/smeserver/contribs/rmitchell/smeserver/howto/Spam%20blocking%20HOWTO%20using%20smtpfront-qmail%20for%20sme%20server.htm

There are other tweaks that are also useful which may also help to reduce and stop spam, see:
http://mirror.contribs.org/smeserver/contribs/rmitchell/smeserver/howto/Mail%20system%20tweaks%20HOWTO%20for%20sme%20server.htm

eg http://mirror.contribs.org/smeserver/contribs/rmitchell/smeserver/howto/Virus%20and%20file%20blocking%20HOWTO%20using%20smtpfront-qmail%20for%20sme%20server.htm

I would say though, that enabling RBL list blocking has the biggest effect of all.

Title: Increase protector level spamfilter
Post by: nguyenvannam on May 25, 2005, 05:40:13 AM

Yes, "useful e-mail" come from my customer, don't come from spam source. But their IP were listed in black list. I am using SME server 6.5 RC1. Are there any solution for this version? Thanks so much.

Title: Increase protector level spamfilter
Post by: raem on May 25, 2005, 06:01:18 AM

nguyenvannam

> But their IP were listed in black list.

Get them to get their IP removed from the black list, but this is likely to be quite difficult to achieve.

Is your customer listed on more than one RBL ?

Remove the RBL that is causing the "problem"

What RBL's are you using ?

Title: Increase protector level spamfilter
Post by: nguyenvannam on May 25, 2005, 08:00:42 AM

I am using:

 sbl-xbl.spamhaus.org
 list.dsbl.org
 dnsbl.sorbs.net

Please advise. Are there any RBL list domain name (not IP address)?

Title: Increase protector level spamfilter
Post by: raem on May 25, 2005, 09:13:56 AM

nguyenvannam

> Are there any RBL list domain name..

Not that I'm aware of.

You can check which list your customers IP is on at
http://openrbl.org
and if it's only one list, then stop using that list.