Hi everyone,

A few times a month we have spam messages getting through, often in German, that have some spam score but not enough to be marked/discarded. Always these messages are marked by DCC, since they're of course bulk spam, but it's also not uncommon to see Pyzor as well. I've been wondering if there are realistic cases where both DCC and Pyzor would mark as spam while the message was ham. I feel like when both co-occur it's a pretty solid sign it's spam. Therefore, I'm wondering if an upstream amplification (or a local one) would make sense.

Some examples (I can also supply full emails, but fear this might prevent my message from arriving):
X-Spam-Status: No, score=4.082 tagged_above=-9999 required=5
    tests=[DCC_CHECK=1.1, DIGEST_MULTIPLE=0.001, FSL_BULK_SIG=0.001,
    HEADER_FROM_DIFFERENT_DOMAINS=0.25, HTML_IMAGE_RATIO_08=0.001,
    HTML_MESSAGE=0.001, MIME_HTML_ONLY=0.1, PYZOR_CHECK=1.985,
    SPF_HELO_NONE=0.001, SPF_NEUTRAL=0.652, T_SCC_BODY_TEXT_LINE=-0.01]
X-Spam-Status: No, score=4.816 tagged_above=-9999 required=5
    tests=[DCC_CHECK=1.1, DIGEST_MULTIPLE=0.001, FSL_BULK_SIG=0.001,
    HEADER_FROM_DIFFERENT_DOMAINS=0.248, HTML_IMAGE_ONLY_28=0.726,
    HTML_IMAGE_RATIO_02=0.001, HTML_MESSAGE=0.001, MIME_HTML_ONLY=0.1,
    PYZOR_CHECK=1.985, SPF_HELO_NONE=0.001, SPF_NEUTRAL=0.652,
    T_REMOTE_IMAGE=0.01, T_SCC_BODY_TEXT_LINE=-0.01]
X-Spam-Status: No, score=4.109 tagged_above=-9999 required=5
    tests=[DCC_CHECK=1.1, DIGEST_MULTIPLE=0.001, FSL_BULK_SIG=0.029,
    HEADER_FROM_DIFFERENT_DOMAINS=0.249, HTML_IMAGE_RATIO_04=0.001,
    HTML_MESSAGE=0.001, MIME_HTML_ONLY=0.1, PYZOR_CHECK=1.985,
    SPF_HELO_NONE=0.001, SPF_NEUTRAL=0.652, T_SCC_BODY_TEXT_LINE=-0.01]

What's people's opinion here?

Kind regards,
Bert Van de Poel
ULYSSIS

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