Re: [exim] DomainKeys signing makes headers too long -> tagg…

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Autor: Tomasz Chmielewski
Datum:  
To: exim-users
Betreff: Re: [exim] DomainKeys signing makes headers too long -> tagged as spam
Ted Cooper schrieb:
> Tomasz Chmielewski wrote:
>> I.e. google/gmail (I've no idea what it uses for signing) creates a
>> "wrapped" DomainKey signature.
>> So is dkim-proxy I use for signing mail with Postfix.
>
> I guess that means other implementations out there can handle wrapped
> lines. I would have been surprised if they didn't but it was/is still
> something is double check. I am surprised that exim didn't wrap the
> lines when writing the header as it has a specially built print function
> that does just that. Something to look at when/if addressing this. I
> guess that means it should be added to Bugzilla.


Yeah that's interesting.
DKIM signature made by Exim is wrapped.
DomainKeys is not.


>> Single test is usually not enough to tag the message as spam. But it can
>> increase the probability that the message is spam.
>> If possible, MTA should avoid increasing that probability.
>
> If I was to use any of those rules, the travel agencies I filter emails
> for would get nothing. Most of their "legitimate" mail hits every single
> one of those rules, and sometimes the entire message is in capital
> letters. Needless to say, SA needed considerable tweaking.


Don't forget - there are rules which subtract score as well.
In the end, it does its job pretty well.


--
Tomasz Chmielewski
http://wpkg.org