I'm trying to block spam based on emails that originate from specific IPV6 IPs, but then get routed through google.

In my denySMTPConnectionsFrom field, I have a file, and in that file I have (among others) the following line:

2401:4900:1::/36

DoDenySMTP is set to Block

enhancedOriginIPDetect is set to All

Below are headers of an email that wasn't blocked. The first Received header shows the message coming from a machine with an IP of 2401:4900:1f38:5ca7:2c0b:46cf:b3b7:7bd

How do I make sure that this type of message gets blocked?

Thanks.

Received: from mail-pl1-f175.google.com ([209.85.214.175] 
helo=mail-pl1-f175.google.com)
         by assp.xmsi.net with SMTPS(TLSv1_3 TLS_AES_256_GCM_SHA384) (2.8.1);
         17 Jul 2024 10:17:18 -0400
Received: by mail-pl1-f175.google.com with SMTP id 
d9443c01a7336-1fb1c918860so6966015ad.1
         for<i...@rkbridal.com>; Wed, 17 Jul 2024 07:17:18 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
         d=gmail.com; s=20230601; t=1721225837; x=1721830637; darn=rkbridal.com;
         h=content-language:thread-index:mime-version:date:subject:to:from
          :message-id:from:to:cc:subject:date:message-id:reply-to;
         bh=DdclICIuNmGSFjlARy2mmAf3vU5ayNPWiCmNiYvEZ5Q=;
         b=AweYAeaN94dfXtNi1kNVLX6SF8cJsXA4gejjPkOnTe4guOPiWqtgWkHtbVXFsmfRza
          lbHR4b4mdC0U6elRH99EfJ7D3f2FrdpPLcVjFhglGQAuLb0Z/kLb3brEbWFKmzq8xhq7
          NajG1m9Ch2nMOgR8ioVGhGtG9HJ4x+nrLMhUrQ0cU/ehGRsBkVQKoTGb+0xxlfJIuKlH
          LJx1jXX+TwIJfS2KRaiw+1OAS6DbeWJRHUstnzFXKRnROYbwhb/4QAyYtYg2xOxtQf8d
          Kc4IEznB+ShNHo7dqNKjaNXU5zIKyuQ3/6EoEndOaC0DZPTGOkw4NumZYex7+ZaKk7HT
          rKZw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
         d=1e100.net; s=20230601; t=1721225837; x=1721830637;
         h=content-language:thread-index:mime-version:date:subject:to:from
          :message-id:x-gm-message-state:from:to:cc:subject:date:message-id
          :reply-to;
         bh=DdclICIuNmGSFjlARy2mmAf3vU5ayNPWiCmNiYvEZ5Q=;
         b=HQ89M/hCmj4phDEaTLgEGh4k3Plz2Fww5bUZBE/2i1nh+7hCekaRXbM52R6k6AzXwb
          mVcTF9R1m8M656zqry0vahwf0kFTCzwRY+Fy5/p7KpI0VP90WTioPAb5xDiKxCNIMYdW
          YGdN/WCIjL9y6nsbjjmWcRannd512EPc2wiQ4w8X5V8ctAX7E+ZkucMMnE6ba+xiSycl
          2a6SPJG3LQCsOZGgHJ+OUN7BtFQrB8lGFDFbMvUWG1u6wEwymef/rFzILJzOVcGB/8+k
          31O4C5999QRTX2NTnYCc7+dsXQk7jamhqS1m1H2lov18eU0Re9vK23h7/xxfN0TQQxl4
          Stfg==
X-Gm-Message-State: AOJu0YykNlKZzhYHwGau63AhCT0ervyd7eaTzsD3DUtWsXgdHtwhrOlD
        p13wu14YXQEuq21Pjt0TT/Kf2vvkb7cqTV/XnvLDscuIIFB1fRkVaTHuzoBu
X-Google-Smtp-Source: 
AGHT+IGfOZ/tuI90k71I9QKPYazf/eU5yOtwXBShy7/9W2Gkdc8S0t0TT1Ea2hqQ2lth3eO4v6i7Yw==
X-Received: by 2002:a17:902:ea0b:b0:1fb:24ea:fe29 with SMTP id 
d9443c01a7336-1fc4c3a660cmr34480485ad.15.1721225837204;
         Wed, 17 Jul 2024 07:17:17 -0700 (PDT)
Received: from DESKTOPJNSFSQ8 ([2401:4900:1f38:5ca7:2c0b:46cf:b3b7:7bd])
         by smtp.gmail.com with ESMTPSA id 
d9443c01a7336-1fc0bc2724dsm75932395ad.173.2024.07.17.07.17.15
         for<i...@rkbridal.com>
         (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128);
         Wed, 17 Jul 2024 07:17:16 -0700 (PDT)
Message-ID:<6697d26c.170a0220.61cd.b...@mx.google.com>
X-Google-Original-Message-ID:<019001dad854$06cfb8e0$146f2aa0$@seo9...@gmail.com>
From: "Henry"<thakur.seo9...@gmail.com>
To: <>
Subject: =?us-ascii?Q?Re:____Website_Ranking.?=
Date: Wed, 17 Jul 2024 19:47:04 +0530
MIME-Version: 1.0
Content-Type: multipart/alternative;
        boundary="----=_NextPart_000_0191_01DAD882.2087F4E0"
X-Mailer: Microsoft Office Outlook 12.0
Thread-Index: AdrYUFQIq3JW1qbARN6idoBL52yrrQ==
Content-Language: en-in



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