[horde] Fwd: Filters

Michael Conway mike.conway at wiredbyte.com
Fri Jun 8 19:59:22 UTC 2007

Horde is by no means a Spam Filter. A blacklist will allow you to  
block certain addresses, a Spam Filter daemon like spam assassin will  
screen the incoming mail against algorithims and score it accordingly  
as spam or ham.

Quoting Ward Hammond <ward at classicreflections.biz>:

> You hit the nail on the head Andy.  Most of the "junk" coming in has
> the same "pretty" name but none of the actual email addresses repeat.
> Therefore the "blacklist" does not work as I have never recieved from
> the same address twice.  Most likely because they are creating bogus
> addresses for a one time spam.  So as I understand it, I should not
> bother trying to get horde to work as it's functionality is not there
> and need to go to a third party anti-spam program.  Thanks again for
> the information and assistance.
> Sincerely,
> Ward Hammond
> Classic Reflections
> 21175 Tomball Parkway, #296
> Houston, TX 77070
> www.classicreflections.biz
> 281-290-0424
> Quoting Andrew Morgan <morgan at orst.edu>:
>> On Fri, 8 Jun 2007, Ward Hammond wrote:
>>> Is there any one on the list that can help with this.  The designers
>>> and/or programmers of horde seem to be unable to understand the problem.
>>> If I use the terms and fields in the address book, the name field is
>>> not recognised in the filter system.  The "name" field seems to be
>>> what is displayed in the "from" field of the mail inbox list.  This
>>> "name" field contains a common name for multiple spams with different
>>> actual "from" email addresses.
>>> I would like to know HOW to set the filter to recognise this "name"
>>> field and stop this spam from showing up.
>>> It would also be nice if the filters could be set to run in background
>>> and delete/block these as they arrive so I do not have to wait for
>>> long periods after manually starting the filters or if it's set to
>>> automatically run the filters at logon.
>> Understood - you want to block on the "pretty name" portion of the To:
>> address, not the actual email address.  For example:
>> To: "Mary Smith" <mary at example.com>
>> And you want to filter on the string "Mary Smith".
>> I don't use filtering within Horde myself, so I can't describe how to
>> create a filter for this.  It is generally better to perform the
>> filtering during message delivery by the MTA, using a tool such as
>> procmail or sieve.  Which tool you use depends on your MTA and mail
>> server (we use postfix and Cyrus IMAPD here).
>> Also, the filtering style you are trying to use will require a lot of
>> manual additions to the filter list over time, as spammers change their
>> tactics.  For more robust spam blocking using free/open-source tools,
>> I'd recommend setting up your MTA to use various RBL lists and Spam
>> Assassin tagging of message.
>> 	Andy
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