Tobias Nord wrote:
I am investigating why all mails from a certain mailing list I have joined
are classified as spam by razor-check. Everything I have read states that
headers do not affect classification, but if I replace the headers the
same message actually passes! Have I misunderstood something about how the
filter works?
Did you make both tests at the same point in time? Remember, as time passes,
razor changes.
Also, did you change any headers that might contain URLs? (ie List-Unsubscribe:)
I'm not sure, but e8 might extract URLs from headers, which would be somewhat of
an exception to the 'no headers' rule, but given that e8 is only looking at
URLs, it might make sense here.
Even if that much is true, the no headers rule still applies to e4, and e8
won't categorize normal header content, just URLs.
For what it's worth I did a test on e4. I grabbed a spam message listed by
razor, and tested the original and a modified copy.
origninal test message:
mail 1.0 e=4 sig=py7ou-MVtaytLyhN8r4uYdgtr80A: Is spam: cf 100 = min_cf 21
The modified message produced:
mail 1.0 e=4 sig=py7ou-MVtaytLyhN8r4uYdgtr80A: Is spam: cf 100 = min_cf 21
The modified message differed in every header in the message.
I Altered all of the following headers:
Received (all of them), From, To, Subject, Date, Message-ID, X-Mailer
And deleted:
MIME-Version, Content-Type,Content-Transfer-Encoding, x-priority,
X-MSMail-Priority,X-MimeOLE, Thread-Index,X-Greylist and all mailscanner
generated headers.
And still e4 generated the same signature.
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