If you're a (e-mail admin) and struggle with incoming spam, I suggest you increase the SpamAssassin score of all e-mails coming from Gmail, Outlook, Yahoo, Yandex and other popular free mail services.

This is because these services usually have excellent reputation and always pass SPF/DMARC/DKIM checks.

The point is to neuter these score reductions because of compliance, so that if a message contains suspicious words that SpamAssassin dislikes, it's going to get flagged as spam.

I for example set the score increase to 4 for messages coming from these free services, and my SpamAssassin filter starts flagging e-mail as suspicious at 5, and as spam at 8.

Because the negative scores from these DKIM, SPF and DMARC policies will deduct points from the 4, e-mails will only get flagged as suspicious if they contain obvious spammer techniques such as all-caps subjects, or mention viagra, or money.

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