Issue Spamassassin false positive issue

[Fabrizio]

Hi,

I got false positives sendind emails to mailboxes (any mailboxes on the server).
Every message, although it is regular, is marked ad spam.
The Spamassassin triggered rules are: HDR_ORDER_FTSDMCXX_DIRECT and MIMEOLE_DIRECT_TO_MX

Here some email tags:

X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on vps03.sitomobile.net
X-Spam-Flag: YES
X-Spam-Level: *****
X-Spam-Status: Yes, score=5.4 required=5.0 tests=DKIM_SIGNED,DKIM_VALID,
DKIM_VALID_AU,HDR_ORDER_FTSDMCXX_DIRECT,HTML_MESSAGE,MIMEOLE_DIRECT_TO_MX,
T_DKIMWL_WL_MED autolearn=no autolearn_force=no version=3.4.0
X-Spam-Report:
* 0.0 HTML_MESSAGE BODY: HTML included in message
* -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's
* domain
* 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily
* valid
* -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature
* 3.5 HDR_ORDER_FTSDMCXX_DIRECT Header order similar to spam
* (FTSDMCXX/boundary variant) direct-to-MX
* 2.0 MIMEOLE_DIRECT_TO_MX MIMEOLE + direct-to-MX
* -0.0 T_DKIMWL_WL_MED DKIMwl.org - Whitelisted Medium sender

...

MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_00DC_01D41F49.783D8B80"
X-Priority: 3
X-MSMail-Priority: Normal
Importance: Normal
X-Mailer: Microsoft Windows Live Mail 16.4.3528.331
X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3528.331
X-Smtpcorp-Track: 1fg46L4bajDPKr.lei4MgEhn
Feedback-ID: 143691m:143691aD1q1Ir:143691s2XzbAXO9q:SMTPCORP
X-Report-Abuse: Please forward a copy of this message, including all
headers, to <abuse-report@smtp2go.com>
X-Spam-Prev-Subject: TEST: Lavori sito completati (SMTP2GO)

How can avoid that regular messages are considered as spam?

Thanks