Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-16 Thread Zan Lynx

On 6/16/2014 12:54 AM, G.W. Haywood wrote:

Because the automated systems are bad at it?


No.


I have to recover 5 or 6 messages every day from my spam trap. For some
reason a lot of sci-fi author's mailing list messages land in there.


Don't blame the automated system because you don't know how to
configure it.


I find your evaluation of my skills -- lacking. And you've gone from 
"the automated system" to "the automated system with manually added 
white listing rules" which in my opinion is a big difference.


For your information, I use the ACM email redirector with its own spam 
filtering, which has rather limited configuration abilities.


So, for example, I can't add a rule to whitelist messages that were sent 
to a particular list address or a rule to whitelist messages with a 
mailing list header. It can't even automatically whitelist addresses 
that I send to, because outgoing mail doesn't go through that server.


Your assumptions are invalid and insulting.
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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-15 Thread G.W. Haywood

Hi there,

On Sun, 15 Jun 2014, Zan Lynx wrote:

On 06/13/2014 01:10 PM, G.W. Haywood wrote:

On Fri, 13 Jun 2014, Pete Biggs wrote:


The issue is that when you reject mail at smtp time you are
explicitly relying on the accuracy of an automated system to
determine what is, or is not, junk. ...


Why is this an issue?


Because the automated systems are bad at it?


No.


I have to recover 5 or 6 messages every day from my spam trap. For some
reason a lot of sci-fi author's mailing list messages land in there.


Don't blame the automated system because you don't know how to
configure it.

--

73,
Ged.
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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-13 Thread Zan Lynx
On 06/13/2014 01:10 PM, G.W. Haywood wrote:
> On Fri, 13 Jun 2014, Pete Biggs wrote:
>
>> The issue is that when you reject mail at smtp time you are
>> explicitly relying on the accuracy of an automated system to
>> determine what is, or is not, junk. ...
>
> Why is this an issue?

Because the automated systems are bad at it?

I have to recover 5 or 6 messages every day from my spam trap. For some
reason a lot of sci-fi author's mailing list messages land in there.
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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-13 Thread G.W. Haywood

Hi there,

On Fri, 13 Jun 2014, Pete Biggs wrote:


The issue is that when you reject mail at smtp time you are
explicitly relying on the accuracy of an automated system to
determine what is, or is not, junk. ...


Why is this an issue?

--

73,
Ged.
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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-13 Thread Jonathan Ryshpan
On Thu, 2014-06-12 at 22:15 +0100, Patrick O'Callaghan wrote:
> On Thu, 2014-06-12 at 09:47 -0700, Jonathan Ryshpan wrote:
> > I'm pleased to have a couple of replies to my posting, but still no
> > answers to the question: how to recognize junk on the existence of a
> > particular header without concern for its content.
> 
> Define a filter (On Specific Header) with the action Set Status to Junk.

This appears to work; incoming messages are recognized correctly.

Oddly similar searches on mail already in Inbox don't work.  Quoting
from my earlier postings:

> ... when I try to select messages from Inbox which
> have a header line starting "X-YahooFilteredBulk:" by clicking
> Search->Advanced Search->Add Condition
> to get a choice box in which I enter:
> Specific Header  :  X-YahooFilteredBulk  :  Exists  :  
> nothing is selected, despite the fact that many such messages are in Inbox

Alternately (editing the above for a new test)

> ... when I try to select messages from Inbox which
> have a header line starting "X-YahooFilteredBulk:" by clicking
> Search->Advanced Search->Add Condition
> to get a choice box in which I enter:
> Specific Header  :  X-YahooFilteredBulk  :  does not contain  : xx
> all messages are selected.

Thanks - jon


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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-12 Thread Patrick O'Callaghan
On Thu, 2014-06-12 at 19:44 +0100, Pete Biggs wrote:

> Sure, running your own mail server gives you the ability to implement
> all manner of heuristics and grey listing and scoring so you can get
> close to the nirvana of a 100% spam classification - but you will never
> get 100% and, more importantly, not everyone has the skill set or the
> resources or the desire to become their own mail admin.
> 
> Clearer?

+1.

poc

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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-12 Thread Patrick O'Callaghan
On Thu, 2014-06-12 at 09:47 -0700, Jonathan Ryshpan wrote:
> I'm pleased to have a couple of replies to my posting, but still no
> answers to the question: how to recognize junk on the existence of a
> particular header without concern for its content.

Define a filter (On Specific Header) with the action Set Status to Junk.

poc

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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-12 Thread Pete Biggs
On Thu, 2014-06-12 at 19:21 +0100, G.W. Haywood wrote:
> Hi there,
> 
> On Thu, 12 Jun 2014, Patrick O'Callaghan wrote:
> 
> > On Thu, 2014-06-12 at 16:04 +0100, G.W. Haywood wrote:
> >> The right place is the mail server, which should recognize that
> >> the mail is junk AND REJECT IT. ...
> >
> > This is far too simplistic. Not all mail identified as spam is in fact
> > spam, and only the final recipient can make the call. There is no one
> > canonically right answer for every situation, so there is a place for
> > client-side spam filtering in many use cases.
> 
> Please pay attention.
> 
> I didn't say that the final recipient shouldn't make the call, I said
> that he should make the call before the mail is accepted by his mail
> server, so that the spammer doesn't get another $currency_unit for
> sending his spam.  This necessarily means that no mail client sees the
> spam, which in turn means that Evolution is not the place to do this.
> 
> Clearer?
> 
I'm perfectly sure that poc knew exactly what you were saying, no matter
how condescendingly you put it.  The issue is that when you reject mail
at smtp time you are explicitly relying on the accuracy of an automated
system to determine what is, or is not, junk.  Unless, of course, you
sit and watch the SMTP traffic for all the mail you receive and press a
button to accept or reject it.

Sure, running your own mail server gives you the ability to implement
all manner of heuristics and grey listing and scoring so you can get
close to the nirvana of a 100% spam classification - but you will never
get 100% and, more importantly, not everyone has the skill set or the
resources or the desire to become their own mail admin.

Clearer?

P.


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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-12 Thread G.W. Haywood

Hello again,

On Thu, 12 Jun 2014, Jonathan Ryshpan wrote:


Not only that, Yahoo manages the server operated by my ISP, which is
ATT, so I am stuck with them.


No, you aren't stuck with them.  AFAICT our ISP (BT, formerly British
Telecom, at the moment) also uses Yahoo servers.  But we don't.  BT
provides us with mail accounts too, and we don't use them either.


They appear to be less bad than Comcast.


Not difficult.  Comcast gets binned here too. :)


I'm pleased to have a couple of replies to my posting, but still no
answers to the question: how to recognize junk on the existence of a
particular header without concern for its content.


You have an answer.  Run your own mail server, and you can do whatever
you like.  Rely on Yahoo - or practically anyone else - and you'll get
what they want you to get.

You haven't said how you're getting the mail into Evolution but you
could in theory use something like fetchmail and pipe the messages
through your own local filters if you really wanted to.  But then if
you go on holiday, and your filters are on the PC at home, well...

--

73,
Ged.
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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-12 Thread G.W. Haywood

Hi there,

On Thu, 12 Jun 2014, Patrick O'Callaghan wrote:


On Thu, 2014-06-12 at 16:04 +0100, G.W. Haywood wrote:

The right place is the mail server, which should recognize that
the mail is junk AND REJECT IT. ...


This is far too simplistic. Not all mail identified as spam is in fact
spam, and only the final recipient can make the call. There is no one
canonically right answer for every situation, so there is a place for
client-side spam filtering in many use cases.


Please pay attention.

I didn't say that the final recipient shouldn't make the call, I said
that he should make the call before the mail is accepted by his mail
server, so that the spammer doesn't get another $currency_unit for
sending his spam.  This necessarily means that no mail client sees the
spam, which in turn means that Evolution is not the place to do this.

Clearer?

--

73,
Ged.
`
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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-12 Thread Jonathan Ryshpan
On Thu, 2014-06-12 at 16:24 +0100, Patrick O'Callaghan wrote:
> On Thu, 2014-06-12 at 16:04 +0100, G.W. Haywood wrote:
> > The right place is the mail server, which should recognize that
> > the mail is junk AND REJECT IT.  Putting it in some 'spam' store
> > on your computer is no good at all, because the message has been
> > accepted by the mail server and the spammer will get paid for it.
> > If the mail is rejected, as opposed to being accepted and binned,
> > the spammer hasn't done his job, which in my book is a Good Thing.
> 
> This is far too simplistic. Not all mail identified as spam is in fact
> spam, and only the final recipient can make the call. There is no one
> canonically right answer for every situation, so there is a place for
> client-side spam filtering in many use cases.

Not only that, Yahoo manages the server operated by my ISP, which is
ATT, so I am stuck with them.  They appear to be less bad than Comcast.

I'm pleased to have a couple of replies to my posting, but still no
answers to the question: how to recognize junk on the existence of a
particular header without concern for its content.

Thanks - jon


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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-12 Thread Patrick O'Callaghan
On Thu, 2014-06-12 at 16:04 +0100, G.W. Haywood wrote:
> The right place is the mail server, which should recognize that
> the mail is junk AND REJECT IT.  Putting it in some 'spam' store
> on your computer is no good at all, because the message has been
> accepted by the mail server and the spammer will get paid for it.
> If the mail is rejected, as opposed to being accepted and binned,
> the spammer hasn't done his job, which in my book is a Good Thing.

This is far too simplistic. Not all mail identified as spam is in fact
spam, and only the final recipient can make the call. There is no one
canonically right answer for every situation, so there is a place for
client-side spam filtering in many use cases.

poc

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Re: [Evolution] Recognizing "Junk" Header from ISP

2014-06-12 Thread G.W. Haywood

Hi there,

On Thu, 12 Jun 2014, Jonathan Ryshpan wrote:


Yahoo, my ISP, marks messages that it thinks are junk ...


H.  In my book, even using a Yahoo server means the mail
is probably junk, so I reject the lot.


I would like evolution to recognize such messages as junk.


The mail client isn't really the right place for this.

The right place is the mail server, which should recognize that
the mail is junk AND REJECT IT.  Putting it in some 'spam' store
on your computer is no good at all, because the message has been
accepted by the mail server and the spammer will get paid for it.
If the mail is rejected, as opposed to being accepted and binned,
the spammer hasn't done his job, which in my book is a Good Thing.

That way, the sender doesn't get the confirmation he needs that the
mail was delivered to a genuine address, and that means the address is
less valuable to the criminals.  If he knows it's a real address the
criminal can sell it for more cash than if he just made it up (which
of course a lot of them do anyway).

So you really need to ditch Yahoo and operate your own mail server.
Then you can irritate some spammers. :)

--

73,
Ged.
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