-2.5 RCVD_IN_HOSTKARMA_W    RBL: Sender listed in HOSTKARMA-WHITE
                         [185.41.28.7 listed in hostkarma.junkemailfilter.com]

We've reduced this score to -1 locally.

-1.0 BAYES_00               BODY: Bayes spam probability is 0 to 1%

Needs to be trained, obviously. Bayes is best for this body content.

Looks like it's coming from some kind of bulk mail service which is whitelisted. Even after training with bayes, it will still be a false negative.

Any ideas on the best way to tackle these kinds of fake order spam?

Investigate adding the SEM_FRESH rules - this domain was created less than five days ago.
https://spameatingmonkey.com/services

Invalid List-ID. You can then use that with other weirdness in a meta.
header    __LIST_ID_DOMAIN_IN_BRACKETS List-id =~ /<([\w-]+)(\.[\w-]+)+>/
meta LIST_ID_IMPROPER_FORMAT __HAS_LIST_ID && !__LIST_ID_DOMAIN_IN_BRACKETS
score  LIST_ID_IMPROPER_FORMAT 0.001
describe LIST_ID_IMPROPER_FORMAT List-id has improper format

Investigate configuring dcc. We also created a meta that matches DCC and URIBLs.

I believe the new Esp module that works to identify bad sendgrid accounts also has support for sendinblue accounts, but to what extent?
X-Mailer: Sendinblue

I believe later versions of SA also have more geolocation support - do you have a need to receive mail from France?
$ whois 185.41.28.7
...
route:          185.41.28.0/22
descr:          SENDINBLUE-185-41-28-0-22
origin:         AS200484

Regards,
Dave




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