On 2025/04/25 7:38 PM, Andy Firman via Exim-users wrote:
I love the block_hosts feature

This would be a feature of your Exim configuration file(s),
not a built-in part of Exim.

This is in my block_hosts file:   194.87.0.0/16

We don't know how your config uses this file.

Is the *194.87.207.175* too deep into the headers for Exim to block?

No, though searching headers can get complicated.

Received: from mail-lf1-f47.google.com ([209.85.167.47]:37932)
Received: by mail-lf1-f47.google.com with SMTP id
X-Google-DKIM-Signature:
X-Gm-Message-State:
X-Gm-Gg:
X-Google-Smtp-Source:
Received: from mhlw.go.jp *([194.87.207.175])*

Docs are at   https://exim.org/docs.html
Since you're running such an old Exim version, pick
the specific docs set.  Read up on ACLs and on string-expansions,
specifically the forany, match and match_ip operators and $header_received:
--
Cheers,
  Jeremy

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