Re: Is master unsuitable to receive mail from lists.debian.org?

2008-05-06 Thread Mark Brown
On Mon, May 05, 2008 at 07:41:52PM +0100, Simon Huggins wrote:
> On Mon, May 05, 2008 at 11:30:45AM -0700, Don Armstrong wrote:

> > When we see spam getting through to the lists, we already adjust the
> > spam filters. If you think you can do a better job, the spamassassin
> > rules are all publicly available, and we gladly accept patches.

> I can't find the bit in there that stops you sending the contentless
> bounce message?  Can you point me at it so I can send a patch to include
> how close to the threshold I am and also patch it so that DDs can
> disable it?

Seconded.  I don't really mind that I'm dropping mail from the lists
(since I don't seem to be getting any false positives) and I'm not
particularly worried about the quality of the filtering on lists - I
find the notification messages *much* more annoying than the spam
itself.

-- 
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Re: Is master unsuitable to receive mail from lists.debian.org?

2008-05-05 Thread Simon Huggins
On Mon, May 05, 2008 at 11:30:45AM -0700, Don Armstrong wrote:
> On Mon, 05 May 2008, Simon Huggins wrote:
> > Perhaps instead of sending these content-free notes that we're going to
> > be unsubscribed some time, after some undisclosed number of bounces,
> > listmasters could consider these messages as hints with which to adjust
> > the spam filter used.
> When we see spam getting through to the lists, we already adjust the
> spam filters. If you think you can do a better job, the spamassassin
> rules are all publicly available, and we gladly accept patches.

I can't find the bit in there that stops you sending the contentless
bounce message?  Can you point me at it so I can send a patch to include
how close to the threshold I am and also patch it so that DDs can
disable it?

Thanks,

Simon.

-- 
[ "No, the radio works.  You don't" - Basil, Fawlty Towers ]


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Re: Is master unsuitable to receive mail from lists.debian.org?

2008-05-05 Thread Don Armstrong
On Mon, 05 May 2008, Simon Huggins wrote:
> Perhaps instead of sending these content-free notes that we're going to
> be unsubscribed some time, after some undisclosed number of bounces,
> listmasters could consider these messages as hints with which to adjust
> the spam filter used.

When we see spam getting through to the lists, we already adjust the
spam filters. If you think you can do a better job, the spamassassin
rules are all publicly available, and we gladly accept patches.


Don Armstrong

-- 
"There's no problem so large it can't be solved by killing the user
off, deleting their files, closing their account and reporting their
REAL earnings to the IRS."
 -- The B.O.F.H..

http://www.donarmstrong.com  http://rzlab.ucr.edu


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Re: Is master unsuitable to receive mail from lists.debian.org?

2008-05-05 Thread Simon Huggins
On Sun, May 04, 2008 at 11:05:31AM -0700, Don Armstrong wrote:
> On Sun, 04 May 2008, Santiago Vila wrote:
> > Executive summary: master.debian.org, where I receive debian email,
> > has stronger spam filtering than lists.debian.org, as master seems
> > to use some kind of "content filtering". As a result, some spam
> > messages distributed by lists.debian.org are rejected by
> > master.debian.org.
> The problem is that the filtering is differential; master.debian.org
> should be reconfigured to either just accept these messages from
> lists, or discard them.

> As listmaster has nothing to do with the mail configuration on master,
> there's not much listmaster can do about it.

I'm not convinced that's really true.

You obviously have some system that generates the messages based on
bounces and that records which message bounced.  If many subscribers
bounce the same mail that's a good indication that it's spam.

Perhaps instead of sending these content-free notes that we're going to
be unsubscribed some time, after some undisclosed number of bounces,
listmasters could consider these messages as hints with which to adjust
the spam filter used.

-- 
--("Do you have a girl coming over?" - Scully)--
Simon ("What's a girl?" - Mulder ) Nomis
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Re: Is master unsuitable to receive mail from lists.debian.org?

2008-05-05 Thread Colin Watson
On Sun, May 04, 2008 at 04:57:10PM -0500, Adam Majer wrote:
> Colin Watson wrote:
> > Yes, I've been seeing the same thing. It's usually just an irritation,
> > but I guess some day I'll hit a threshold and get unsubscribed from a
> > bunch of lists.
> 
> Wouldn't it be possible to configure the mail server to filter the mail
> based on the header content? That is,
> 
>  * Is it spam? => Yes => Now do the following:

In this case, master should simply trust lists.debian.org to have done
spam checking and not repeat it. After all they're in the same
administrative domain.

-- 
Colin Watson   [EMAIL PROTECTED]


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Re: Is master unsuitable to receive mail from lists.debian.org?

2008-05-04 Thread Adam Borowski
On Sun, May 04, 2008 at 04:57:10PM -0500, Adam Majer wrote:
> Colin Watson wrote:
> > Yes, I've been seeing the same thing. It's usually just an irritation,
> > but I guess some day I'll hit a threshold and get unsubscribed from a
> > bunch of lists.
> 
> Wouldn't it be possible to configure the mail server to filter the mail
> based on the header content? That is,
> 
>  * Is it spam? => Yes => Now do the following:
> 
>1. If mail from a mailing list or precedence Bulk or has List-Id in
> headers, discard it
>2. Reject with 5xx - Spam

Shouldn't this be in the default config of SA in Debian?

-- 
1KB // Microsoft corollary to Hanlon's razor:
//  Never attribute to stupidity what can be
//  adequately explained by malice.


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Re: Is master unsuitable to receive mail from lists.debian.org?

2008-05-04 Thread Adam Majer
Colin Watson wrote:
> Yes, I've been seeing the same thing. It's usually just an irritation,
> but I guess some day I'll hit a threshold and get unsubscribed from a
> bunch of lists.

Wouldn't it be possible to configure the mail server to filter the mail
based on the header content? That is,

 * Is it spam? => Yes => Now do the following:

   1. If mail from a mailing list or precedence Bulk or has List-Id in
headers, discard it
   2. Reject with 5xx - Spam

This is kind of what I have setup postfix to do except I filter based on
source IP - could be easier to setup in master's case. If mail is from a
known mailing list server (eg. debian, sourceforge), it gets accepted
and processed in a post queue filter with spam being dropped. If mail is
not from a known mailing list server, it goes to default configuration
which does pre-queue filtering where spam is rejected with 5xx SMTP
level message.

I'm sure it would be possible to set it up based on the existence of
Priority: Bulk or List-Id: headers.

The only side effect is sometimes the number of connections are more
than the server can filter, but that is not generally a significant
problem. It just means the connection is delayed for a few minutes.

- Adam


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Re: Is master unsuitable to receive mail from lists.debian.org?

2008-05-04 Thread Colin Watson
On Sun, May 04, 2008 at 02:00:45PM +0200, Santiago Vila wrote:
> I tried to contact [EMAIL PROTECTED] about this without success,
> so this time I will Cc: debian-devel, as it would be extremely strange
> that I'm the only person with this problem.
> 
> Executive summary: master.debian.org, where I receive debian email,
> has stronger spam filtering than lists.debian.org, as master seems to
> use some kind of "content filtering". As a result, some spam messages
> distributed by lists.debian.org are rejected by master.debian.org.

Yes, I've been seeing the same thing. It's usually just an irritation,
but I guess some day I'll hit a threshold and get unsubscribed from a
bunch of lists.

> From: Debian Listmaster Team <[EMAIL PROTECTED]>
[...]
> If those bounces pass a certain threshold, our bounce-detection will
> forcibly remove your subscription.

It would be nice if the mail indicated what that threshold is, so that
we know whether this is an immediate cause for concern. The FAQ merely
says "it depends" (with some details, but not enough to do an accurate
check), so perhaps the program that generates the mail is in a better
position to say.

-- 
Colin Watson   [EMAIL PROTECTED]


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Re: Is master unsuitable to receive mail from lists.debian.org?

2008-05-04 Thread Don Armstrong
On Sun, 04 May 2008, Santiago Vila wrote:
> Executive summary: master.debian.org, where I receive debian email,
> has stronger spam filtering than lists.debian.org, as master seems
> to use some kind of "content filtering". As a result, some spam
> messages distributed by lists.debian.org are rejected by
> master.debian.org.

The problem is that the filtering is differential; master.debian.org
should be reconfigured to either just accept these messages from
lists, or discard them.

As listmaster has nothing to do with the mail configuration on master,
there's not much listmaster can do about it. Our spam rules are
publicly available here:

http://svn.debian.org/wsvn/pkg-listmaster/trunk/spamassassin_config/


Don Armstrong

-- 
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something.
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http://www.donarmstrong.com  http://rzlab.ucr.edu


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Is master unsuitable to receive mail from lists.debian.org?

2008-05-04 Thread Santiago Vila
Hello.

I tried to contact [EMAIL PROTECTED] about this without success,
so this time I will Cc: debian-devel, as it would be extremely strange
that I'm the only person with this problem.

Executive summary: master.debian.org, where I receive debian email,
has stronger spam filtering than lists.debian.org, as master seems to
use some kind of "content filtering". As a result, some spam messages
distributed by lists.debian.org are rejected by master.debian.org.

This is insane! Please do agree on a set of filtering rules for master
and lists.debian.org which do not make lists.debian.org to send
messages to master that master will then reject.

Thanks.

-- Forwarded message --
From: Debian Listmaster Team <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Date: Sun,  4 May 2008 01:45:34 + (UTC)
Subject: lists.debian.org has received bounces from you

Dear subscriber,

We've encountered some problems while sending listmail to your
emailaddress [EMAIL PROTECTED]

In the last seven days we've seen bounces for the following list:
* debian-devel
(http://lists.debian.org/bounces/R72HthGDh7nED58rcbJBHw)

(The link above points to a copy of the latest bounce
and will be valid for seven days.)

If those bounces pass a certain threshold, our bounce-detection will
forcibly remove your subscription.

If you are using 'Before-Queue Content filtering' and you think that this
mail is wrong, you should whitelist liszt.debian.org from Content filtering.

For more information see http://wiki.debian.org/Teams/ListMaster/FAQ

You are welcome to contact [EMAIL PROTECTED] if you think this
message was sent in error.

Sincerely,
The Listmaster Team
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