Re: TDMA (was Re: Spam filtering software)

2002-08-29 Thread John Buttery

* Chris Green [EMAIL PROTECTED] [2002-08-28 10:15:48 +0100]:
 On Wed, Aug 28, 2002 at 04:05:57AM -0500, John Buttery wrote:
Anyway, just out of curiosity, how come you guys aren't using TMDA?
  Just haven't found it yet, or...?
  
 Probably because it's useless for quite a number of people.

  Useless is a pretty strong word...it's merely a question of whether
the benefit of the tool justifies the setup time.

 Much of my incoming mail is in response to enquiries I send out to
 trade suppliers and small businesses.  If I implemented TMDA they
 would have to jump through hoops to get their response to me, it's
 difficult enough getting a response from some people anyway so I
 suspect that TMDA would reduce the reply rate to negligable
 proportions.  The alternative of modifying the TDMA 'whitelist' when I
 send the enquiry out is similarly flawed (I have to jump through
 hoops) and anyway isn't guaranteed to work as they may not respond
 from an address I know about.

  Well, I'm not going to get too far into advocacy here, given that
this is a MUA list and not a anti-spam software list, but I do need to
point out that you must have read a very old version of TMDA's feature
list, because it is much more than a simple whitelist (which you could
do with a 3-4 line procmail recipe anyway).  The situation you're
talking about sounds like a good candidate for TMDA's date-keyed
addresses.

 Only a very small proportion of my (wanted) incoming mail is from
 people/addresses that are known to me, a 'whitelist' would catch a
 tiny proportion of my mail.

  That depends very heavily on the robustness of the whitelist.  Maybe
TMDA isn't right for you...ok...but don't insinuate that it's just a
pattern check against a file with a list of regexps in it.  :)

-- 

 John Buttery

Life is a whim of several billion cells
to be you for a while.

 (Web page temporarily unavailable)




msg30491/pgp0.pgp
Description: PGP signature


Re: TDMA (was Re: Spam filtering software)

2002-08-28 Thread Chris Green

On Wed, Aug 28, 2002 at 04:05:57AM -0500, John Buttery wrote:
  
 blacklisting adds 100 to the score. All you really have to do is set
 your procmail rules so that mails with a score over 90 are sent to
 /dev/null, and mails with less are sent to your spam folder. Then you
 get pretty much the best of both worlds.
 
   OK, this should have been its own thread a long time ago.  :)
 
   Anyway, just out of curiosity, how come you guys aren't using TMDA?
 Just haven't found it yet, or...?
 
Probably because it's useless for quite a number of people.

Much of my incoming mail is in response to enquiries I send out to
trade suppliers and small businesses.  If I implemented TMDA they
would have to jump through hoops to get their response to me, it's
difficult enough getting a response from some people anyway so I
suspect that TMDA would reduce the reply rate to negligable
proportions.  The alternative of modifying the TDMA 'whitelist' when I
send the enquiry out is similarly flawed (I have to jump through
hoops) and anyway isn't guaranteed to work as they may not respond
from an address I know about.

Only a very small proportion of my (wanted) incoming mail is from
people/addresses that are known to me, a 'whitelist' would catch a
tiny proportion of my mail.

-- 
Chris Green ([EMAIL PROTECTED])



Re: TDMA (was Re: Spam filtering software)

2002-08-28 Thread Roman Neuhauser

 Date: Wed, 28 Aug 2002 10:15:48 +0100
 From: Chris Green [EMAIL PROTECTED]
 Subject: Re: TDMA (was Re: Spam filtering software)
 
 On Wed, Aug 28, 2002 at 04:05:57AM -0500, John Buttery wrote:
Anyway, just out of curiosity, how come you guys aren't using TMDA?
  Just haven't found it yet, or...?
 
 Probably because it's useless for quite a number of people.
 
 Much of my incoming mail is in response to enquiries I send out to
 trade suppliers and small businesses.  If I implemented TMDA they
 would have to jump through hoops to get their response to me, it's
 difficult enough getting a response from some people anyway so I
 suspect that TMDA would reduce the reply rate to negligable
 proportions.  The alternative of modifying the TDMA 'whitelist' when I
 send the enquiry out is similarly flawed (I have to jump through
 hoops) and anyway isn't guaranteed to work as they may not respond
 from an address I know about.

I think you should re-read the tmda docs, especially the client
configuration.

-- 
FreeBSD 4.6-STABLE
12:29PM up 7 days, 18:22, 17 users, load averages: 0.04, 0.11, 0.10



Re: TDMA (was Re: Spam filtering software)

2002-08-28 Thread Chris Green

On Wed, Aug 28, 2002 at 12:34:58PM +0200, Roman Neuhauser wrote:
  Date: Wed, 28 Aug 2002 10:15:48 +0100
  From: Chris Green [EMAIL PROTECTED]
  Subject: Re: TDMA (was Re: Spam filtering software)
  
  On Wed, Aug 28, 2002 at 04:05:57AM -0500, John Buttery wrote:
 Anyway, just out of curiosity, how come you guys aren't using TMDA?
   Just haven't found it yet, or...?
  
  Probably because it's useless for quite a number of people.
  
  Much of my incoming mail is in response to enquiries I send out to
  trade suppliers and small businesses.  If I implemented TMDA they
  would have to jump through hoops to get their response to me, it's
  difficult enough getting a response from some people anyway so I
  suspect that TMDA would reduce the reply rate to negligable
  proportions.  The alternative of modifying the TDMA 'whitelist' when I
  send the enquiry out is similarly flawed (I have to jump through
  hoops) and anyway isn't guaranteed to work as they may not respond
  from an address I know about.
 
 I think you should re-read the tmda docs, especially the client
 configuration.
 
Yes?  This assumes that I own a domain and have an unlimited number of
E-Mail addresses available to me, again not the normal situation.

-- 
Chris Green ([EMAIL PROTECTED])



Re: TDMA (was Re: Spam filtering software)

2002-08-28 Thread Roman Neuhauser

 Date: Wed, 28 Aug 2002 11:46:59 +0100
 From: Chris Green [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Subject: Re: TDMA (was Re: Spam filtering software)
 
 On Wed, Aug 28, 2002 at 12:34:58PM +0200, Roman Neuhauser wrote:
   Date: Wed, 28 Aug 2002 10:15:48 +0100
   From: Chris Green [EMAIL PROTECTED]
   Subject: Re: TDMA (was Re: Spam filtering software)
   
   On Wed, Aug 28, 2002 at 04:05:57AM -0500, John Buttery wrote:
  Anyway, just out of curiosity, how come you guys aren't using TMDA?
Just haven't found it yet, or...?
   
   Probably because it's useless for quite a number of people.
   
   Much of my incoming mail is in response to enquiries I send out to
   trade suppliers and small businesses.  If I implemented TMDA they
   would have to jump through hoops to get their response to me, it's
   difficult enough getting a response from some people anyway so I
   suspect that TMDA would reduce the reply rate to negligable
   proportions.  The alternative of modifying the TDMA 'whitelist' when I
   send the enquiry out is similarly flawed (I have to jump through
   hoops) and anyway isn't guaranteed to work as they may not respond
   from an address I know about.
  
  I think you should re-read the tmda docs, especially the client
  configuration.
  
 Yes?  This assumes that I own a domain and have an unlimited number of
 E-Mail addresses available to me, again not the normal situation.

no. tmda can work on a nullclient. it only requires that

1) your pop3 server stores envelope information in headers
2) the smtp server of your provider accepts addresses with
   extensions

-- 
FreeBSD 4.6-STABLE
1:48PM up 7 days, 19:41, 19 users, load averages: 0.04, 0.06, 0.01



Re: TDMA (was Re: Spam filtering software)

2002-08-28 Thread Chris Green

On Wed, Aug 28, 2002 at 01:58:32PM +0200, Roman Neuhauser wrote:
   I think you should re-read the tmda docs, especially the client
   configuration.
   
  Yes?  This assumes that I own a domain and have an unlimited number of
  E-Mail addresses available to me, again not the normal situation.
 
 no. tmda can work on a nullclient. it only requires that
 
 1) your pop3 server stores envelope information in headers
 2) the smtp server of your provider accepts addresses with
extensions
 
I can't see this bit about accepting addresses with extensions.

My adddress here is [EMAIL PROTECTED] and that's it, I don't *think*
any alternatives are possible which will reach me here.  The mail is
not received via a POP3 server at all so 1) isn't applicable.

I can see that TMDA could be very effective on a home linux machine
but that isn't my situation (neither is it for quite a few other
people).

-- 
Chris Green ([EMAIL PROTECTED])



Re: TDMA (was Re: Spam filtering software)

2002-08-28 Thread darren chamberlain

* Chris Green [EMAIL PROTECTED] [2002-08-28 08:38]:
 On Wed, Aug 28, 2002 at 01:58:32PM +0200, Roman Neuhauser wrote:
  2) the smtp server of your provider accepts addresses with
 extensions
  
 I can't see this bit about accepting addresses with extensions.
 
 My adddress here is [EMAIL PROTECTED] and that's it, I don't *think*
 any alternatives are possible which will reach me here.

I think + addresses are the extension referred to above; have you tried
them?  I.e., [EMAIL PROTECTED] -- most modern SMTP servers will Do
The Right Thing, and deliver it to the mailbox for user chris.  Sendmail
does it, so does postfix, qmail does it but uses a - instead of a + by
default.  I'm sure others do as well.

Oh yeah, almost forgot -- only the MTA that invokes the MDA needs to
support it.

(darren)

-- 
Whatever is done for love is beyond good and evil.
-- Friedrich Neitzsche