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Spam filter

  • 04-10-2005 9:01am
    #1
    Dundhoone
    Closed Accounts Posts: 710 ✭✭✭


    Business end Spam Filters - what does your work use????

    We are trialing a product called copperfasten - has anyone any experience with this ? Its basically a mail firewall which sits between our firewall and mail server, and it seems to do the trick - although it does seem to catch a lot more spam than we were getting before we started trialling it!!!

    Can anybody recommend another product they have had sucess with, maybe software?


Comments

  • #2
    maidhc
    Registered Users, Registered Users 2 Posts: 7,722 ✭✭✭maidhc


    Spamassassin seems to be good for business end mail servers. It filters all my email to my work address and seems to make few mistakes. Although it can be installed on a Windows machine it is very much a linux program. http://spamassassin.apache.org/


    At home I use spambayes, which has a plugin for outlook. With a good few thousand classified emails to train it, it is pretty reliable.


  • #3
    Kali
    Closed Accounts Posts: 6,601 ✭✭✭Kali


    Spamassassin, clamav, razor & dcc: http://www.flakshack.com/anti-spam/wiki/index.php

    On a day-to-day basis its effectiveness ranges from around 98 to 100%:

    One person in particular in the company gets approximately 700 spam msgs caught a week.. anything upto may 10 end up in her a/c over the week... thats a big big difference :)

    Not one email-attached virus has slipped by clamav since install (~7 months).


  • #4
    Dundhoone
    Closed Accounts Posts: 710 ✭✭✭Dundhoone


    Actually this copperfasten box is running ClamAV.


  • #5
    Kali
    Closed Accounts Posts: 6,601 ✭✭✭Kali


    Dundhoone wrote:
    Actually this copperfasten box is running ClamAV.

    Hmm just had a look at the data sheet, id imagine its running spamassassin as well and I'd be surprised if it wasn't running amavisd-new & postfix as the content handler and mail relay... great idea though, package up lots of open-source tech, throw a nice web configuration tool on the front of it and charge lots.


  • #6
    Dundhoone
    Closed Accounts Posts: 710 ✭✭✭Dundhoone


    ha, yeah its kinda smart alright, still it is a nice neat little package.

    Thanks for the link. Might be brave enough to have a go . Probably cheaper to my employer to just buy the box though!

    Found another similar thing called "The barracuda"

    great names for one hell of a boring piece of kit!


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  • #7
    wandererz
    Registered Users, Registered Users 2 Posts: 2,789 ✭✭✭wandererz


    Both Copperfasten & Barracuda use SpamAssassin which is freeware. The Copperfasten uses ClamAV, again freeware.

    It quite really depends on the size of your network. Personally, i'd go for a more established vendor such as Clearswift (Mailsweeper) & if you prefer appliances they also have one out now.


  • #8
    Dundhoone
    Closed Accounts Posts: 710 ✭✭✭Dundhoone


    just as a matter of interest, what do ye think of having a second anti-viral guard in the copperfasten box? It seems a bit like overkill , I guess what im wondering is do other companies operate a number of different anti virus programs to ensure nothing gets through?


  • #9
    wandererz
    Registered Users, Registered Users 2 Posts: 2,789 ✭✭✭wandererz


    It's not overkill at all. The idea being that different AV companies take different amounts of time to release AV signatures, running multiple AV's reduces the risk of failure in one vendor software.

    Definately recommended.

    However, if you are running a different AV on your Mail Server and is set for regular updates (at least every hour or so), risks are reduced.


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