Karsten Bräckelmann <[EMAIL PROTECTED]> writes:

> On Fri, 2008-05-30 at 16:21 -0400, Greg Troxel wrote:
>> I have recently understood AWL better, and am wondering if there should
>> be some minimum number of entries before AWL is applied.  I often get
>> spam that doesn't score that high due to being a fresh relay.  If I
>> rescore it with '|spamassassin -t' after a few days, often it's on
>> blacklists and scores a lot higher, but is pulled down by AWL.
>
> What do you gain by re-scoring?

Nothing useful.  I noticed this after getting spam that had a URI that
wasn't on URIBL, reporting it and finding that it was added, and then
going to check if the rules then picked it up.  So I am really wondering
about the scenario of

  get spam that scores moderately, say 2

  [time passes, spam's sender or URI get on blocklists]

  get same spam from same sender/net that scores 8 (same rules, plus
  SPAMCOM_BL, URIBL) but it gets moved down to 5 based on the previous
  message

I think I have seen this, but I'm not 100% sure - this was the
motivation for wanting to see more data on the AWL report line.

> While the subject (and the name, Auto White List) might be confusing,
> the main purpose AFAIK actually is to *white* list good senders, that
> occasionally happen to send a spammy looking message. After all, most
> senders are forged, and an "auto black list" effect is rather unlikely.
> Even more so, since AWL takes the senders source net into account.
> (Didn't grep through my corpus though, going from memory. ;)

Sure, I see the point, but it gives credit to a very-spammy message for
a previous semi-spammy message too, and that is in general reasonable.

>> So, I wonder if a rule that said 'AWL is only applied if there are >=5
>> scores in the average' would avoid giving credit for spam that arrived
>> when it wasn't classified as high as it should be now.
>
> Again, I don't see why you would re-score messages days later.

I didn't mean to rescore.  I find that a lot of spam is repeated, and
even has the same from address and ip.  I am trying to avoid for the
next instance giving credit for a previous non-spammy message when the
previous message was just as spammy, just not noticed as such because it
wasn't in blocklists yet.

> However, some mechanism to clean out single message senders, has been
> mentioned before, and IIRC should be a known feature request. A (low)
> threshold before AWL kicks in, possibly combined with a timeout for
> pruning single message senders would be rather related.

Thanks for the comments.  I've put this on my todo list (which doesn't
mean it will happen anytime soon :-).

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