Have the following email header:

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ist-Unsubscribe-Post: List-Unsubscribe=One-Click

Content-Type: multipart/alternative; boundary="._grid-BlockBoundary=oiutw937w2pt3z7_1075778"

X-RBL-Check-Ref: 51y43qoygq39b2g-kwwenwvghtnzx

X-RBL-Warning: WEIGHT20: Weight of 38 reaches or exceeds the limit of 20.

X-RBL-Warning: WEIGHT14: Weight of 38 reaches or exceeds the limit of 14.

X-RBL-Warning: WEIGHT20: Weight of 38 reaches or exceeds the limit of 20.

X-Declude-Sender: acevips@myfurnituresirplus.com [5.175.179.38]

X-Declude-Spoolname: 803347010.eml

X-Declude-RefID:

X-Declude-Note: Scanned by Declude 4.12.11

X-Declude-Scan: Outgoing Score [38] at 16:13:31 on 30 Apr 2026

X-Declude-Tests: BARRACUDA [15], SURBL [20], HELOBOGUS [5], SPFPASS [-1],

 WEIGHT10 [10], WEIGHT14 [14], WEIGHT20 [20]

X-Country-Chain: GERMANY->destination

X-Declude-Code: f

X-HELO: out2.myfurnituresirplus.com
'=========================================
Would have expected the SM to mark this as either SPAM HIGH or SPAM LOW .. but it didnt mark either.
For our part ... this came from inbound server XX.XX.XX.123 ---> to Main Mail server
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What other configurations needs to be setup?
  On the main mail server... under security ..   XX.XX.XX.123  has the following