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Legacy Forums => General Discussion (Legacy) => Topic started by: DexterUS on January 30, 2005, 11:35:33 PM

Title: Spam Stopper
Post by: DexterUS on January 30, 2005, 11:35:33 PM

Hello,  This is my second post :)

Does anyone know of a Challenge Respose type of SME add on that I could use to stop spam?

I like the Spam Arrest personal version but they do not have one for the business applications where I control the software on my SME 6.0 server.

Any ideas?

Thanks!
Dexter
DexterUS@Hcm3.us

Title: Spam Stopper
Post by: bigbri100 on January 31, 2005, 01:03:52 AM

TMDA and ASSP both use challenge response.

There are howto's for both floating around.

Title: TMDA
Post by: DexterUS on April 12, 2005, 05:06:51 AM

Help!

Can you send me a link showing me how to install TMDA or ASSP on SME 6.0?

I am new to this and can't get around that well. :)

Thanks!
Dexter

Title: Spam Stopper
Post by: raem on April 12, 2005, 09:55:16 AM

Have you set up mailfront/smtpfront-qmail blocking using RBL lists yet ?
See the HOWTO to configure it manually
http://mirror.contribs.org/smeserver/contribs/rmitchell/smeserver/howto/Spam%20blocking%20HOWTO%20using%20smtpfront-qmail%20for%20sme%20server.htm
or
it is part of Jesper Knudsens Spam Filter panel if you install that.

There is also the greylisting contrib, search for the devinfo announcement, there is some debate over the usefulness of this.

Title: Spam Stopper
Post by: kruhm on April 12, 2005, 03:20:51 PM

Quote

it is part of Jesper Knudsens Spam Filter panel if you install that

Jesper's filter works the same as the howto on smtpfront.

Title: Spam Stopper
Post by: raem on April 12, 2005, 11:37:03 PM

kruhm

> Jesper's filter doesn't work the same as the howto > on smtpfront. The howto is works better.

That's interesting, what is the difference ?

Title: Spam Stopper
Post by: kruhm on April 13, 2005, 12:10:10 AM

I can only tell you what i experienced.

Jesper's filter only blocked a minimal amount of email [<10 an hour].

The smtpfront howto worked instantly, blocking more than 2300 emails in the first 9 hour stretch [>255 an hour].

The two were tried within a few hours of each other & no other config was done.

Server had nearly 11,000 emails a day.

What can I say? -one worked like I wanted it to, one didn't.

Title: Spam Stopper
Post by: raem on April 13, 2005, 12:34:40 AM

kruhm

> I can only tell you what i experienced.
> What can I say? -one worked like I wanted it to, one didn't

Fair enough, but puzzling.

We are talking about the same Spam Filter here, ie
http://sme.swerts-knudsen.dk/index.html?frame=http%3A//sme.swerts-knudsen.dk/howtos/howto_29.htm

> The two were tried within a few hours of each
> other & no other config was done.

Was that on the same server ?
As far as I understand Jespers spam filter uses the same RBL blocking functionality as would be used if you configured RBL lists manually.
 
Did you set up the same number of RBL lists in the spam filter panel as you had configured manually ?

My /home/e-smth/configuration settings are the same either way (manually configured or using spam filter panel).

/sbin/e-smith/db configuration show smtpfront-qmail
smtpfront-qmail=service
    ExternalInterfacesFilter=/usr/bin/qmail-queue.amavis
    Instances=40
    InternalInterfacesFilter=/usr/bin/qmail-queue.amavis
    Patterns=enabled
    PatternsFile=/var/qmail/control/patterns.default
    Proxy=enabled
    RBLList=postmaster.rfc-ignorant.org:bogusmx.rfc-ignorant.org:abuse.rfc-ignorant.org:relays.ordb.org:sbl-xbl.spamhaus.org:dsn.rfc-ignorant.org:dnsbl.njabl.org:dnsbl.sorbs.net:whois.rfc-ignorant.org:list.dsbl.org
    access=public
    status=enabled

Regards

Title: Spam Stopper
Post by: kruhm on April 13, 2005, 12:41:27 AM

Does seem strange.

Same filter, yes same server, yes same lists.

checking the logs, i was having dns problems (it was on a weekend). Probably why Jesper's didn't work.

I'll be glad to retest during low load times.
-----------------
I retested and yes, my comments were incorrect.
The RBL on Jesper's filter works the same as the howto.